Phase inspections
Senior Airman Austin Strabala inspects the environmental control system compartment for foreign objects prior to a quality assurance inspection Feb. 22, 2011, at Kandahar Airfield, Afghanistan. Airman Strabala is an A-10 Thunderbolt II phase inspection section journeyman assigned to the 451st Expeditionary Maintenance Squadron. (U.S. Air Force photo/Senior Airman Willard E. Grande II)