Ran into this at BoingBoing but they pointed to a chat forum with a few images.
I tracked it down to Strategy Page which has 14 images of the “event”
Ellsworth AFB wanted to test a Fire Fighting system in a hanger.
Their test was to actually run the foaming system for a few seconds.
Their only problem was that the test did not go as planned:





I have not been able to find any reports about this in the media. Probably not something that they would want bandied about.
For the full set of images, visit here: StrategyPage's Military Photos where you can find lots of very cool images such as this one:

Posted by DaveH at April 15, 2006 10:05 PM | TrackBackA C-17 Globemaster III parts the skies over western South Carolina during a training mission on Feb. 2, 2003.
http://www.strategypage.com/gallery/articles/military_photos_200471421.asp
The Ronald Reagan decontaminating. Now there's a drill I don't want to be part of: "Hey, try landing while were decontaminating."
Posted by: Al at April 18, 2006 01:45 PM