Defense Secretary Leon E. Panetta speaks to a wounded warrior from Walter Reed National Military Medical Center during a Washington Nationals baseball game in Washington, D.C., July 18, 2012. DOD photo by Erin A. Kirk-Cuomo

UH-60 Black Hawk helicopters airlift 105 mm howitzers to a predetermined area on Fort Drum, N.Y., July 18, 2012. The soldiers are assigned to 1st Battalion, 258th Field Artillery; the helicopter crew is assigned to Army Aviation Support Facility 3 in Latham, N.Y. U.S. Army photo by Sgt. 1st Class Steven Petibone

U.S. Defense Secretary Leon E. Panetta, right, has a private dinner with Israeli Defense Minister Ehud Barak in Jerusalem, July 31, 2012. Panetta is on a five-day trip to the region to meet with leaders in Tunisia, Egypt, Israel and Jordan. DOD photo by Erin A. Kirk-Cuomo

U.S. Defense Secretary Leon E. Panetta arrives in Tel Aviv, Israel, July 31, 2012. Panetta is on a five-day trip to the region to meet with leaders in Tunisia, Egypt, Israel and Jordan. DOD photo by Erin A. Kirk-Cuomo

U.S. Defense Secretary Leon E. Panetta looks out at the old city in Jerusalem with Jeremy Bash, his chief of staff, July 31, 2012. Panetta is on a five-day trip to the region to meet with leaders in Tunisia, Egypt, Israel and Jordan. DOD photo by Erin A. Kirk-Cuomo

U.S. Defense Secretary Leon E. Panetta meets with Egyptian President Muhammad Mursi in Cairo, July 31, 2012. Panetta is on a five-day trip to the region to meet with leaders in Tunisia, Egypt, Israel and Jordan. DOD photo by Erin A. Kirk-Cuomo

U.S. Army World Class Athlete Program rifle shooter Sgt. Vincent Hancock won the Olympic gold medal in men's skeet after competing at the Royal Artillery Barracks in London during the 2012 Summer Olympics, July 31, 2012. He is the first skeet shooter to win consecutive Olympic gold medals in the sport; he earned a gold medal in the 2008 Summer Olympic Games in Beijing. The 23-year-old Hancock is assigned to the U.S. Army Marksmanship Unit. U.S. Army photo by Tim Hipps

U.S. Army 1st Lt. John Tidwell performs a 60-yard shuttle run, part of the Army's physical readiness test, during the U.S. Army Europe's Best Junior Officer Competition in Grafenwoehr, Germany, July 27, 2012. Tidwell is assigned to the 72nd Expeditionary Signal Battalion. The competition gives company grade officers the chance to compete in multiple tasks and be named "best officer" for U.S. Army Europe. U.S. Army photo by Markus Rauchenberger