SECURITY WATCH Army Pfc. Travis Watson pulls perimeter security as the unit conducts a dismounted live-fire exercise on an infantry platoon battle course on Joint Base Elmendorf-Richardson, Alaska, June 19, 2013. Watson is assigned to 1st Squadron, Airborne, 40th Cavalry Regiment. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 040479-I-SER41-655.jpg Photo Gallery