Defensive Avionic Systems
Airman 1st Class Aaron Riley, 28th Aircraft Maintenance Squadron defensive avionic systems technician, re-installs a wire harness on a B-1 bomber after repairing corrosion damage found during an inspection at Ellsworth Air Force Base, S.D., May 29, 2013. Defensive avionic systems are mission essential countermeasures systems used by aviators to detect and avoid, or counteract, threats they may encounter during combat missions. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)