Sam Wilkins, a spray-lat technician with the 578th Storage and Disposal Squadron at Davis Monthan Air Force Base, prepares an Air Force KC-135 E-model aircraft for preservation and storage. The 50-year-old aircraft was delivered to the group for long-term storage at the 2,600 acre facility after serving with the 151st Air Refueling Wing, Utah Air National Guard for more than 20 years. U.S. Air Force photo by: Master Sgt. Burke Baker 