

Los Angeles-class attack submarine USS Tucson (SSN 770) transits the East Sea July 26, 2010, while leading a 13-ship formation. South Korea and the United States were conducting combined alliance maritime and air readiness exercise Invincible Spirit in the seas east of the Korean peninsula from July 25 through 28, 2010. This was the first in a series of joint military exercises that will occur over the coming months in the East and West seas. (U.S. Navy photo by Mass Communication Specialist 3rd Class Adam K. Thomas)

The Nimitz-class aircraft carrier USS Ronald Reagan (CVN 76) leads a mass formation of ships from Korea, Taiwan, Japan, Singapore, France, Canada, Australia and the United States through the Pacific Ocean July 24, 2010, during Rim of the Pacific (RIMPAC) 2010. RIMPAC is the world's largest international maritime exercise and is designed to increase mutual cooperation and enhance the tactical capabilities of participating nations in various aspects of maritime operations at sea. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Taylor, U.S. Navy)

An F-22 Raptor aircraft peels away to land while an F-15 Eagle aircraft flies the approach at Nellis Air Force Base, Nev., July 16, 2010. The aircraft are from the U.S. Air Force Weapons School, 433rd Weapons Squadron. The Weapons School teaches graduate-level instructor courses that provide advanced training in weapons and tactics employment. (Photo by Master Sgt. Kevin J. Gruenwald)