U.S. Navy Aviation Structural Mechanic 3rd Class Katie J. Heninger, assigned to Helicopter Sea Combat Squadron 9, installs tail landing gear on an MH-60S Seahawk helicopter Oct. 17, 2010 in the hangar bay of USS George H.W. Bush (CVN 77) while under way in the Atlantic Ocean. George H.W. Bush was conducting a Tailored Ship's Training Availability & Final Evaluation Problem (TSTA/FEP), an annual evaluation which demonstrates a ships ability to conduct multiple simultaneous combat missions and survive complex casualty situations under stressful conditions.