Open Source Cloud

Welcome to our new home at the historic Tivoli Theater! Please check our details for access to the space on [our website](https://www.hacdc.org/visit/). Join the discord for questions / help getting in (use channel #let-me-in) [https://discord.gg/dNjuNhNmeT](https://discord.gg/dNjuNhNmeT)

Volunteer with us refurbishing donated bicycles to help us get them back out in the community! This event is open to both new and existing volunteers. No mechanical experience is necessary. Note: The warehouse location is in the alley behind 1502 Mt Vernon Ave. Enter through the gray door next to a roll-down garage door. If you drive to the location, be sure to park in the street, not in the alleys or parking lots surrounding the warehouse. And wear clothes you don't mind getting dirty with bicycle grease! Please be aware that volunteers under 18 need a parent or guardian to accompany them to their first volunteer experience and sign a liability waiver, while volunteers under 16 need a parent or guardian to accompany them at all times while volunteering with Vélocity.

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Kick off your week from **11:00 AM to 12:00 PM wit**h focusing on the smooth, elegant foundations of Ballroom dance. This session is perfect for seniors and families looking to improve posture and balance through the Waltz, Foxtrot, and Tango in a low-pressure, welcoming environment. Price: $25 Drop-in, Membership **DOES NOT** include this class!

Open play up to 18 people, all skill levels. Bring your friends or potential new members, bring a BBQ, (we have a lot of BBQ’s over the summer) your dog and cat, your good times and your laughter too.

**NEW EVENT!!!** Please be sure to RSVP on **[Eventbrite](https://www.eventbrite.com/e/1988717400279?aff=oddtdtcreator)** so we have an accurate guest list. Pink Poodle Club is Spark's weekly Yappy Hour — every Monday on the back patio from 5–7pm. $1 Scooby Snacks for hoomans and $1 pup cups for the doggos. Come join us for a fun and **dog-friendly** gathering! It’s the perfect chance to meet new people, share stories, and enjoy a relaxed atmosphere with the **LGBTQ+ community**. Whether you're looking to make friends or just hang out, everyone’s welcome. Grab your favorite drink and let’s make some great memories together! This event is free to attend. We hope to see you there. In addition to coffee selections, the venue offers a good food and drinks [menu](https://spark-dc.com/pages/menu-2). We encourage you to register your attendance in advance. We hope to see you there. When you arrive with your dog, order on your own from the [menu](https://spark-dc.com/pages/menu-2). Then meet and mingle with LGBTQ+ folk and their dogs on the back patio. **Metro Directions:** Be eco-friendly. U Street Metro (Yellow/Green line) is only a few blocks away. Take the 13th Street Exit. The venue is adjacent to Crush Bar. This event is a safe space for everyone under the rainbow. Please feel free to invite all your friends to join you there! This event is hosted by **[Go Gay DC](https://www.gogaydc.com)**, Washington DC's inclusive LGBTQ+ community focused on friendship, leadership, and service. It now reaches over 10K fabulous people and is growing fast. Visit [https://www.gogaydc.com](https://www.gogaydc.com) . Go Gay DC's founder is **[TJ Flavell](https://www.linkedin.com/in/tjflavell/)**. Go Gay DC is on social media: Join the Facebook Group [https://www.facebook.com/groups/GoGayDC](https://www.facebook.com/groups/GoGayDC) Like the Facebook Page [https://www.facebook.com/GoGayDC](https://www.facebook.com/GoGayDC) Follow on Instagram [https://www.instagram.com/GoGayDC](https://www.instagram.com/GoGayDC) Follow on Threads [https://www.threads.com/@GoGayDC](https://www.threads.com/@gogaydc) Follow on Bluesky [https://gogaydc.bsky.social/](https://gogaydc.bsky.social/) Follow on X [https://www.x.com/GoGayDC](https://www.x.com/GoGayDC) Watch on YouTube [https://www.youtube.com/GoGayDC](https://www.youtube.com/GoGayDC) LinkedIn [https://www.linkedin.com/showcase/GoGayDC](https://www.linkedin.com/showcase/GoGayDC?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExZG1DTnM0VnJybG83U3FWcnNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR765Xxf5t8wFzbCac74QNX3p0Bs2oT0drXZoOmLV63J8cURMl3ta5b8iP3ztg_aem_nSdndpxd5-hXJ8myNF2_vQ) Search keywords: LGBT LGBTQ LGBTQI LQBTQIA Lesbian Gay Bisexual Transgender Queer Intersex Straight Allies Two-Spirit

This week's guest cube is Michael's Creepy Cube! List here: [https://cubecobra.com/cube/list/de98a70c-665d-4d8f-b77c-39f83a827a77](https://cubecobra.com/cube/list/de98a70c-665d-4d8f-b77c-39f83a827a77) **NEW UPDATE:** Additional members of the cubing community have reached out to me and we all agree, the more cubing the better! I have removed the 12 person limit and we are adding an overflow cube for those also interested in non vintage type cubes! These guest cubes may consist of the following: \- Alex's Enchantment Cube: [Enchanted to Meet You](https://cubecobra.com/cube/list/enchantedCube)! \- Matthew's Avatar cube: [Avatar: The Last Airbender Power(ful) Cube](https://cubecobra.com/cube/list/avatarTLA) Priority will still fall to firing the vintage cube but what this means is if we reach 12 members we can offer the option to fire both cubes at 6 and 6 or just the vintage cube at 2 pods each. If we reach over 12 we will divide up the players between the two cubes with earlier RSVPs getting priority on their choice. If you have a cube that you are interested in having as a spill over cube please reach out to me and we can coordinate. Thank you! Come join and casually draft cube! No cost to enter and no cards needed! The store provides promo booster packs and I usually throw in a pack of the most recent standard set to award to the people with the best records at the end of the night. [What is Cube?](https://www.youtube.com/watch?v=rNDBTRG6keM) What: Cube Draft When: 6:00pm Where: Your Hobby Place in Old Town Alexandria (Your Hobby Place, 700 N Washington St, Alexandria, VA 22314) We aim to start drafting shortly after 6:00pm as the store's register closes at 9:00pm. The store owner is kind enough to keep the space open for us to finish rounds. In previous events we've usually wrapped up around 9:45. All skill levels are welcome and all cards, lands, tokens needed are provided so you only need to bring yourself and potentially some dice and playmat if you prefer. The list can be seen here: [https://cubecobra.com/cube/list/proxybacon](https://cubecobra.com/cube/list/proxybacon) Join Your Hobby Place's Discord and grab the Cube Role in the mtg-chat channel for the most up to date information on cube at their location: [https://discord.gg/9je3G8vzXh](https://discord.gg/9je3G8vzXh) **Important Notice:** I have seen an increased number of signups and no shows amongst brand new accounts. In an effort to make sure we have room for everyone if this is your first time joining and you have just created a meetup account please reach out to me via Meetup or discord. **Late Policy:** RSVPing will hold your spot for up to 10 minutes after 6. If you expect you may be running late please reach out to me via the store's discord. My username is iluvbacon610.

We’re excited to bring the community together for an evening of learning and connection. This time, we'll have a community member from Chainguard sharing a use case and, as usual, an Elastic employee sharing their expertise as well. Come support your fellow developers, learn something new, and meet others who are passionate about search, observability, and security. **Date and Time:** Tuesday, May 19th, from 5:30-7:30 pm EDT **Location:** Elastic Arlington Office - 4100 Fairfax Drive, Ste 500, Arlington, VA 22203 **Agenda:** * 5:30 pm: Doors open; say hi, grab a seat, and eat some food. * 6:00 pm: The SBOM Pile in Your S3 Bucket: Turning Bills of Materials Into a Risk Dashboard; and Watching It Shrink with Chainguard, by Mike Barreta, Senior Manager, Engineering at Chainguard * 6:30 pm: Q&A * 6:40 pm: **Agentic Observability: Next-Gen Alerting and Auto-Detected Significant Events**, by Jason Rhodes, Senior Manager, Software Engineering at Elastic * 7:10 pm: Q&A * 7:20-7:30 pm: Networking & refreshments **Talk Abstracts:** **"The SBOM Pile in Your S3 Bucket: Turning Bills of Materials Into a Risk Dashboard; and Watching It Shrink with Chainguard**" Most organizations now generate SBOMs because someone — EO 14028, a FedRAMP auditor, an ISSM — told them to. They land in an S3 bucket, get versioned, and are almost universally never queried. This talk is about what happens when you finally do. I'll stand up a self-contained Elastic stack, pour in SBOMs (SPDX), SLSA provenance, Sigstore signatures, Grype vulnerability scans, the CISA KEV catalog, and OpenVEX adjudication for 30 container images, and show the queries that only become possible once SBOMs stop being compliance artifacts and start being telemetry: which packages I actually run right now, which CVEs are real exposures versus VEX-suppressed noise, what swapping a stock image for its Chainguard equivalent would buy me, and how much of my CVE list is just stuff I inherited from the base layer. Then the cleanup. The same dashboards on Chainguard images show what disappears when the SBOM is small, the signatures verify, and the advisory feed is active: \~9,000 fewer CVEs and \~2.5 GB saved across 20 image pairs, KEV exposure dropping from 7 hits to 0, compliance pass rate going from 0% to 76.5% against NIST 800-218 / FedRAMP Moderate / SSDF. **Bio:** Mike Barretta leads Chainguard’s public sector solutions engineering team, focused on helping ensure the federal government receives its fair share of the future. Barretta has worked across civilian, defense and intel programs in a variety of roles—software developer, data scientist, solution architect—for a variety of organizations—system integrators, consulting companies, software vendors—with the common purpose of creating and championing technologies and techniques for simplifying the extraction and utilization of information from lots of data. Having witnessed the ever-increasing threats to those systems, Barretta is now focused on methods and mitigations to secure them **Agentic Observability: Next-Gen Alerting and Auto-Detected Significant Events** We're rebuilding Elastic's alerting engine to make alerts more flexible\, more powerful\, and more valuable as data\. Next\-gen alerting rules will run anything ES\|QL supports and capture whatever fields matter to you\, so alerts carry the context you need for real downstream analysis\. And if you'd rather not manage these rules yourself\, AI agents can help\, drafting them from natural language\, recommending tuning and configuration changes\, and reducing noise through deduplication\. On top of this, we're also building a new Significant Events system which automatically builds a continuously updated knowledge base of your incoming data's own metadata. Using this deep understanding, our agentic tools will detect significant events from log patterns, anomalies, and predicted behavior — without you having to create a single rule. **Bio:** Jason Rhodes is a software engineering lead at Elastic, where he works on alerting and observability features. Based in the DC area, he has over 15 years of experience in software development and has been an active contributor to the local tech community — creating and organizing Baltimore NodeSchool and charmCityJS. When he's not writing and reviewing code, he's probably watching too many movies. **Parking:** * The building’s parking garage is operated by Colonial Parking and is located off N. Randolph Street * Book a spot on[ SpotHero](https://spothero.com/search?kind=address&latitude=38.8818514&longitude=-77.1095268&search_string=4100+Fairfax+Dr+%23500%2C+Arlington%2C+VA+22203%2C+USA) * A Metro Station is located across the street

Open Mic StandUp Comedy. Sign up list goes out at 10:30 a.m. (**In the morning**. Do not show up at 10:30 at night) Each performer will get 5 minutes to perform. If you don't want to perform this time around, feel free to come enjoy the mic and relax. If you need to cancel, please change your status to "will not attend." Street parking is abundant. Train one block away.

NOTE CHANGE IN VENUE! GM Anne will be running a session of Dolmenwood. Dolmenwood is a fantasy adventure game set in a lavishly detailed world inspired by the fairy tales and eerie folklore of the British Isles. Like traditional fairy tales, Dolmenwood blends the dark and whimsical, the wondrous and weird. We’ll be starting with level 2 characters. New players welcome! No prep needed! If you want to familiarize yourself with the system and/or roll up a character, free resources can be found here: https://www.exaltedfuneral.com/pages/dolmenwood-free-resources **Where**: Belle Pre Apartment Building, Alexandria VA (public conference room) Looking for a place to play in-person RPGs and make new friends? Burnt out on internet D&D? Interested in trying games like Shadowdark and Dungeon Crawl Classics? Look no further than DMV RPG - Open Table! Whether you're a seasoned player or just getting started with tabletop role-playing, our group offers a welcoming, inclusive, and safe environment for all gamers to gather and embark on epic adventures together. From Dungeons & Dragons to sci-fi sagas, there's something for everyone here. Join us for regularly scheduled meetups, make new friends, and unleash your imagination in a fun and collaborative setting. Let the games begin! **Rules**: always teachable at the table **Gaming is for everybody**: Welcoming, inclusive, and safe **Pregens**: the GM will have pre-made characters so you can jump right in **Game**: Old School & New School, but likely lightweight **Multiple GMs**: We run games in a rotating GM format, so come to play and make friends, but we'll be looking for your interesting one shots and mini-campaigns to try.

Want to mess with some electronics? Or perhaps contribute to HacDC's main group project? HacDC's latest event brings hardware projects to the community. We will focus primarily on the main project (Space Blimp!) but please feel free to bring some of your own projects to show off and work on!

**MoCo Psychedelic Society — Monthly Gathering** 📅 Date/Time May 23rd \| 1:00 – 3:00 PM 📍 Connie Morella Bethesda Public Library \~ Medium Room Come join us for our monthly gathering — a space for fellowship, learning, advocacy, and community connection. Whether you're a familiar face or joining us for the first time, you are welcome here. *** **✨ This Month:** We will have our monthly general meeting, with introductions, entheogenic experience reports, a legislative update, and the latest in psychedelic science. Brad will present this paper, "[Human brain changes after first psilocybin use](https://rdcu.be/fizuR)"; please download and bring your questions! *** **A Few Important Notes** The MoCo Psychedelic Society is a community space for education, connection, and advocacy — not a venue for sourcing or sales. All information shared at this event is for **educational purposes only** and does not constitute medical advice or encourage the use of any illegal substance. A note on legality: Most psychedelic substances are currently classified as **Schedule I** controlled substances by the DEA. Their use outside of clinical trial settings or states where they are becoming legal remains illegal in the United States. **Ketamine** is an exception — it is legal when administered by a licensed medical professional. *** We hope to see you there. Come as you are. 🌱

Join DC Polyam at our game night at Spark Social! There will be games provided at Spark Social but please feel free to bring your own games to have more options to play with everyone! Come by yourself, invite your friends, your partner(s), and even your entire polycule! Come join us from DC proper, Maryland, or Virginia; we welcome all people from all aspects of life and relationship dynamics. Spark Social has non-alcoholic options for those that don't want/don't drink. Follow us on Instagram and join our Discord @DCPolyam We always enforce a set of house rules in order to maintain a safe space: * **Respectful Behavior** towards hosts and other guests is required; anyone who violates these rules may be asked to leave the event. * **Expectations:** Check your expectations at the door. Being at this event does not signal sexual availability or indicate any aspect of sexual orientation. Our events are about developing friendships and connections within the community. This is a no cruising event, in order to maintain a comfortable atmosphere for our guests. * **Safe Spaces:** We strive to create a safe space for people of ALL identities, including those who do not identify as polyamorous. * **No photography, video, or recording** of any kind is allowed **without prior verbal consent** of all parties involved. * **Verbal Consent:** Please be sure to ask and wait for a yes before hugging or initiating any physical contact, and encourage each other to speak openly about consent and personal boundaries. This helps foster a culture where personal boundaries are supported and attendees are empowered to speak confidently of their limits. (i.e. “Can I give you a hug?” “No thank you, but I would love a handshake.”) If you have any questions please feel free to reach out!

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Main Library, Meeting Room 2B Join us for a welcoming evening of reflection, gentle music, and meaningful conversation. We’ll begin with a short grounding moment, followed by a brief reading from spiritual or philosophical traditions, and an open reflection circle where participants can share (or simply listen). Libera Animae is an interfaith community focused on inner growth, creativity, and authentic connection. All backgrounds are welcome.

We will show how to build custom agents with Microsoft Agent Framework. Attendees will learn how to build and custom host agents when Microsoft Foundry is not a viable option.

Feeling down? Sometimes depressed? Can't focus? Negativity & stress? Recent losses? Creativity in career and personal life hindered by mental blocks? Sometimes we never fully recover from traumatic experiences. Whether it was yesterday, last week or a year ago, traumatic experiences - a loss of a loved one, losing a job, a breakup - can leave you scarred. You talk about it and feel a little better, but it never goes away. After you hang up the phone, it's still there; the sadness, the cloud, the over-thinking, the worry, the guilt. You try to focus, but you're blocked. You try to look forward into new experiences, new relationships but a cloud is hanging over you, casting a shadow on what you once considered a bright, cheerful future. What happened to your courage? Your strength of character? You're 'why not' attitude? Whoever said 'time heals' must have had a special time machine, because after weeks, months, years, you're wondering - when exactly does that kick in? Sometimes it seems like drinking or drugs are the way to go. But they wear off, and now the problem is still there with added side effects from the drugs. At this free local Meetup event we will talk about: * What causes grief, anxiety and depression to become chronic. * Is it possible to regain your joy and happiness even after traumatic experiences? * How to break away from negativity and focus on the future * What are the steps to take to get control of your mind and your emotions? Learn about a safe, gentle, do-it-yourself counseling that can be done in the comfort of your own home. Let's explore safe, effective solutions for healing from traumatic experiences. Be sure to click on the red "Attend" button below to come to the event. We look forward to seeing you there. This group is sponsored by the Dianetics & Scientology Life Improvement Center.

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** TBD **YouTube Link** TBD

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message \*\*Chris (the organizer)\*\*with a **title and short description** of what you’d like to share. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.linkedin.com/company/transformlabs/) Sign up also accessible via [Transform Labs Luma](https://luma.com/transformlabshq)

ASH is Atheists, Skeptics and Humanists of First Unitarian Universalists of Columbus Ohio TBD Snacks are usually available, and you are welcome to bringing something to share!