TIKRIT COLORS U.S. Army soldiers perform maintenance on a CH-47 Chinook helicopter parked on the flight line on Contingency Operating Base Speicher, Tikrit, Iraq, Feb. 4, 2009. The soldiers are assigned to the 25th Infantry Division's 3rd General Support Aviation Battalion. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 785839-A-FIW04-823.jpg Photo Gallery