A photo provided by the Defense Department shows Defense Secretary Robert M. Gates, left, speaking to Army Gen. Walter L. "Skip" Sharp, commander of U.S. Combined Forces Command and commander of U.S. Forces Korea, on board a helicopter to Camp Casey in South Korea to speak with U.S. and Korean troops, Tuesday July 20, 2010. (AP Photo/Cherie Cullen)

Photo by: Cherie Cullen

A photo provided by the Defense Department shows Defense Secretary Robert M. Gates, left, speaking to Army Gen. Walter L. "Skip" Sharp, commander of U.S. Combined Forces Command and commander of U.S. Forces Korea, on board a helicopter to Camp Casey in South Korea to speak with U.S. and Korean troops, Tuesday July 20, 2010. (AP Photo/Cherie Cullen)