Capt. Christian Apsey, 113th Air Force District of Washington Air National Guard bioenvironmental engineer, helps test chemical agents during a training scenario at the Center for National Response in W.Va., March 27, 2014. Teams of bioenvironmental engineers, emergency management specialists and firefighters detect trace chemical and biological agents at Black Flag, a two-week various scenarios training course. (U.S. Air Force photo/Airman 1st Class Nesha Humes)
Airman 1st Class Nesha Humes
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/1244977">https://www.dvidshub.net/image/1244977</a>