MISSION SECURITY U.S. Air Force Lt. Col. Mark Reents provides security during a combat resupply mission to Barge Matal in the Kunar Valley conducted by the Afghan Air Force and NATO Air Training Command-Afghanistan, April 14, 2011. Reents is a NATO Air Training Command-Afghanistan adviser deployed to Kabul. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 453148-W-TTJ51-573.jpg Photo Gallery