SEYMOUR JOHNSON AIR FORCE BASE, N.C. -- Airman 1st Class Tyler Adams shows Airman Jackie Payton, both 336th Aircraft Maintenance Unit crew chiefs, how to check servicing on a jet at Seymour Johnson Air Force Base, N.C., Feb. 9, 2010. Check servicing a jet is part of a thru-flight inspection, which only occurs between flights if a jet is flying twice in one day. Airman Adams is from Salt Lake City, Utah, and Airman Payton is from Wayne, W.Va. (U.S. Air Force photo/Senior Airman Whitney Lambert)