Civil Engineer Airmen attend the 2014 Black Flag training exercise at the Center for National Response’s Memorial Tunnel near Standard in W.Va., from March 24 to April 4. The West Virginia National Guard manages the CNR as an element of the Joint Interagency Training and Education Center. The approximately half mile long tunnel is ideal for consequence and crisis management emergency response training. (U.S. Air Force Photo/ Airman 1st Class Nesha Humes)