An F-35 drops an AMRAAM missile during testing at Edwards Air Force Base, Calif. The foam in the pit is positioned in a wedge layout to absorb the impact of the weapon and prevent it from bouncing and damaging the weapons bay. If the weapon and its instrumentation have not been damaged during the drop, it can be reused in future ground releases. (U.S. Air Force photo by Tom Reynolds/Lockheed Martin)