U.S. Air Force Senior Airman Joseph Roberts and U.S. Air Force Airman 1st Class Trevor Krutsch complete a 50-hour inspection of an HH-60 Pave Hawk helicopter on Bagram Airfield, Afghanistan, June 28, 2015. Roberts and Krutsch are crew chiefs assigned to the 41st Expeditionary Helicopter Maintenance Unit. U.S. Air Force Senior Airman Joseph Roberts and U.S. Air Force Airman 1st Class Trevor Krutsch complete a 50-hour inspection of an HH-60 Pave Hawk helicopter on Bagram Airfield, Afghanistan, June 28, 2015. Roberts and Krutsch are crew chiefs assigned to the 41st Expeditionary Helicopter Maintenance Unit. SHARE: Download: Full Size (1.966798 MB) Tags: photo essays Credit: VIRIN: 179308-R-FRD97-821.jpg Photo Gallery