Senior Airman Casey Hardy conducts an inertial navigation system in-flight write-up.
U.S. Air Force Senior Airman Casey Hardy, of the 64th Expeditionary Helicopter Maintenance Squadron, conducts an inertial navigation system in-flight write-up aboard an HH-60G Pave Hawk helicopter at Joint Base Balad, Iraq, on Sept. 1, 2009. The write-up helps ensure the Pave Hawk is mission capable and fully operational.