U.S. Army Sgt. Caisy Loop provides security. U.S. Army Sgt. Caisy Loop provides security from the gunner's seat of a Stryker combat vehicle during a patrol in Baghdad, Iraq, on Sept. 17, 2007. Loop is assigned to 4th Squadron, 2nd Stryker Cavalry Regiment, 1st Armored Division. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 302737-G-VVU19-156.jpg Photo Gallery