An unmanned vehicle helps secure the runway at Ben Gurion airport near Tel Aviv, Israel, on Nov. 2. Ben Gurion is among the overseas airports that set up security perimeters well outside the terminal buildings. Ariel Schalit/AP hide caption

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An ROTC member opens an American flag on the field prior to the start of a college football game. President Obama asked in his State of the Union address for renewed partnership between ROTC recruiters and schools. Scott Halleran/Getty Images hide caption

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Ahmed Khalfan Ghailani was captured in Pakistan in 2004 and later interrogated overseas at a secret CIA-run camp. U.S. District Attorney's Office hide caption

itoggle caption U.S. District Attorney's Office

U.S. Marines attend a role call on the flight deck of the USS Essex, a multipurpose amphibious assault ship, in November. Defense Secretary Robert Gates says he wants to reduce the Marine Corps by 15,000 to 20,000 in the coming years. Ed Jones/Getty Images hide caption

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