ATSO Launch
Staff Sgt. Jason Klemanski, 127th Maintenance Support Squadron, works on an A-10 Thunderbolt II engine while he wears chemical protective gear, Oct. 13, 2012, at Selfridge Air National Guard Base, Mich. The squadron spent most of a day wearing the gear while performing their duties around the aircraft. (Air National Guard photo by TSgt. Dan Heaton)