VANDENBERG AIR FORCE BASE, Calif. -- Nathan Lancor, 30th Civil Engineer Squadron emergency management trainer, helps Capt. Carman Leone, 30th Space Wing Staff Judge Advocate assistant, get a proper fit on his gas mask during deployment readiness training at Cocheo Park Thursday, Nov. 1, 2012. The use of CBRN protective gear is one of many essential skills on which Airmen are evaluated as they prepare for deployment. (U.S. Air Force photo/Michael Peterson)