
Rolling Thunder gathers again this Memorial Day weekend for its 26th rally, which kicks off Saturday when thousands on motorcycles will gather at the Pentagon before riding into D.C. (The Washington Times)

**FILE** The Pentagon, across the Potomac River from Washington, is seen in this aerial view in March 2008. (Associated Press)

** FILE ** Secretary of Defense Chuck Hagel answers questions on Syria during a joint news conference with the United Kingdom's Secretary of State for Defence Phillip Hammond, at the Pentagon in Washington, Thursday, May 2, 2013. (AP Photo/J. Scott Applewhite)

**FILE** The Pentagon, across the Potomac River from Washington, is seen in this aerial view in March 2008. (Associated Press)

Under a new policy, women in the Marine Corps are eligible for combat-related positions, such as scout sniper. The Pentagon formally announced Jan. 24 that the 1994 Combat Exclusion Policy had been rescinded. (U.S. Marine Corps)

** FILE ** Secretary of Defense Chuck Hagel answers questions on Syria during a joint news conference with the United Kingdom's Secretary of State for Defence Phillip Hammond, at the Pentagon in Washington, Thursday, May 2, 2013. (AP Photo/J. Scott Applewhite)

** FILE ** Secretary of Defense Chuck Hagel answers questions on Syria during a joint news conference with the United Kingdom's Secretary of State for Defence Phillip Hammond, at the Pentagon in Washington, Thursday, May 2, 2013. (AP Photo/J. Scott Applewhite)

Gen. Mark A. Welsh III (right), the Air Force chief of staff, and Secretary of the Air Force Michael B. Donley (left) appear before the Senate Armed Services Committee on Capitol Hill in Washington on Tuesday, May 7, 2013. Besides funding for next year's Pentagon budget, the Air Force is dealing with controversy over sexual assaults and how the military justice system handles it. (AP Photo/J. Scott Applewhite)

Gen. Mark A. Welsh III (right), the Air Force chief of staff, and Secretary of the Air Force Michael B. Donley (left) appear before the Senate Armed Services Committee on Capitol Hill in Washington on Tuesday, May 7, 2013. Besides funding for next year's Pentagon budget, the Air Force is dealing with controversy over sexual assaults and how the military justice system handles it. (AP Photo/J. Scott Applewhite)