HUMVEE OVERHEAD A U.S. Army Chinook Helicopter makes its landing approach to deliver a humvee to a Forward Operating Base in Afghanistan, March 4, 2010. The Chinook is the U.S. Army's primary cargo aircraft and has been one of the main work horses throughout Operation Enduring Freedom in Afghanistan. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 041940-N-AGM60-951.jpg Photo Gallery