U.S. And South Korea Forces Undergo Military Exercises

POCHEON, SOUTH KOREA - MARCH 07: U.S. soldiers 2nd Infantry Division, Stryker Battalion Combat Team from Fort Lewis, Washington participate in Key Resolve/Foal Eagle exercise on March 7, 2011 in Pocheon, South Korea. The annual combined Field Training Exercise, part of Key Resolve/Foal Eagle 2011, is conducted between the Republic of Korea and United States forces and is one of the largest annual military training exercises in the world. The annual training has in the past caused tensions with North Korea. (Photo by Chung Sung-Jun/Getty Images)