With a former head of U.S. Africa Command scheduled to testify at a closed-door hearing Wednesday about the events surrounding last year's attack on an American outpost in Benghazi, former members of the military are demanding the hearings be made public. OPSEC, a grassroots advocacy organization composed of former members of the intelligence community and special operations forces, has launched an online petition calling for an end to closed-door hearings on the Benghazi attacks. "Americans have been demanding answers on the lack of a U.S. military response to the attack in Benghazi, but what they're getting in reply are committee...