U.S. Air Force 1st Lt. Bradley Tiefel (left), an 86th Medical Squadron critical care nurse, and Maj. Kevin Hettinger, a 435th Contingency Response Group physician, both from Ramstein Air Base, Germany, perform ops checks on their medical equipment July 8, 2011, at the Transoceanic Abort Landing Site at Zaragoza Air Base, Spain, prior to the launch of Space Shuttle Atlantis. This TAL is one of three primary landing sites within the U.S. Air Forces Europe area of responsibility that serve as a possible site for a space shuttle needing to make an emergency landing. (U.S. Air Force photo/Tech. Sgt. Chenzira Mallory)