Senior Airman Anthony Ramirez, 482nd Civil Engineer Squadron emergency management journeyman, tests chemical agents during Black Flag training exercises at the Center for National Response in W.Va., March 27, 2014. Teams of bioenvironmental engineers, emergency management specialists and firefighters went through various scenarios throughout Black Flag, a two-week training course to detect trace chemical and biological agents. (U.S. Air Force Photo/ Airman 1st Class Nesha Humes)