MC-130J Winglets
Jeff Frisbe, a Lockheed Martin contractor with the 413th Flight Test Squadron, waits for word to begin marshalling out the MC-130J for a test mission at Eglin Air Force Base, Fla. The aircraft has been fitted with vertical fins on each wing, called winglets. The 413th Flight Test Squadron aircrew and engineers tested the modified aircraft over eight flights. The goal of the tests was to collect data on possible fuel efficiency improvements and performance with the winglets and lift distribution control system installed. (U.S. Air Force photo/Samuel King Jr.)