HOLLOMAN AIR FORCE BASE, N.M. -- Airman 1st Class Cory Smith, 49th Security Forces Squadron, leads the way during a building-clearing exercise with Maj. Chris DeGuelle, 49th SFS commander, and Staff Sgt. Matthew Bowker, 49th SFS, Dec. 17. The defenders are participating in "First Responder to an Active Gunman" training taught by members of the Roswell Police Department Special Operations Team. (U.S. Air Force photo/Tech. Sgt. Chris Flahive)