PINK PATROL U.S. Marine Corps Corporal Mark Hickok patrols through a field during a clearing mission in Marja in Afghanistan's Helmand province, April 9, 2011. Hickok, a combat engineer, is assigned to the 1st Combat Engineer Battalion. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 770163-Z-ZXX80-513.jpg Photo Gallery