Army Sgt. Christopher Gonzalez programs radio frequencies. Army Sgt. Christopher Gonzalez programs radio frequencies into the communications systems in an M1A1 Abrams Main Battle Tank prior to a mission in Baqubah, Iraq, on May 27, 2005. Gonzalez is attached to the 3rd Brigade Troop Battalion, 3rd Infantry Division. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 657109-E-KJM50-915.jpg Photo Gallery