Department of Defense General Counsel Jeh C. Johnson and U.S. Army Gen. Carter Ham conduct a press briefing at the Pentagon discussing the public release of the "Don't Ask, Don't Tell" Comprehensive Working Group report, Nov. 30, 2010. DOD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley

Defense Secretary Robert M. Gates and Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, conduct a press briefing at the Pentagon discussing the public release of the "Don't Ask, Don't Tell" Comprehensive Working Group report, Nov. 30, 2010. DOD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley

U.S. Marine Corps Lance Cpl. Zachary Allen, front, walks through a corn field during an operation near Forward Operationg Base Jackson, Afghanistan, Nov. 23, 2010. Zachary, an infantryman is assigned to India Company, 3rd Battalion, 5th Marine Regiment. The Marines stayed in the Southern Green Zone for more than a day to observe and search for the Taliban. U.S. Marine Corps photo by Cpl. Ned Johnson

Ted Childs, principal of Ted Childs, LLC; Valerie Jarrett, senior advisor and assistant to President Obama for public engagement and intergovernmental affairs; U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff; and ABC News correspondent Claire Shipman participate in the Alfred P. Sloan Foundation Focus on Workplace Flexibility panel at the Corcoran Gallery of Art in Washington, D.C., Nov. 29, 2010. DOD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley

U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, answers a question from ABC News correspondent Claire Shipman, who moderated the Alfred P. Sloan Foundation Focus on Workplace Flexibility panel at the Corcoran Gallery of Art in Washington, D.C., Nov. 29, 2010. DOD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley

U.S. Army Ltc. John H. Knightstep hands out toys to Pakistani children affected by floods in Swat Valley, Pakistan, Nov. 24, 2010. Knightstep is assigned to the 16th Combat Aviation Brigade. U.S. Army photo by Sgt. Jason Bushong

A Cougar AS3/32 helicopter tests its flares during a tactical exercise over Badghis, in western Afghanistan, Nov. 28, 2010. Photo by Commander Major Ignacio Rosales de Salamanca Rodriguez

The amphibious assault ship USS Peleliu transits the South Pacific Ocean in high seas during the conclusion of a deployment to the western Pacific Ocean, Nov. 26, 2010. The Peleliu is the flagship of the Peleliu Amphibious Ready Group and is returning to homeport in San Diego. U.S. Navy photo by Petty Officer 2nd Class David Turnham