First talk at the Hambug mini-DebConf was about CADUS, a humanitarian hackspace run by people who organise festivals. They turned an old truck into a mobile hospital, took it to Iraq and treated people injured in the Battle of Mosul.
Got stopped by TSA for....energy bars. Pulled my bag off of the belt, opened it up, looked around, and then pulled out a bag of 15 energy bars. Every time I get stopped it seems more and more obvious that it's just security theater.