CARGO CREW U.S. Air Force Master Sgt. Bradley Nulf secures cargo for an airdrop on Bagram Airfield, Afghanistan. Aug. 1, 2014. Nulf is an evaluator loadmaster assigned to the 774th Expeditionary Airlift Squadron, which is using a new wireless gate release system for airdrops. The system saves material, fuel costs and man hours for the Air Force. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 882043-L-UKV31-246.jpg Photo Gallery