Nigeria's military has located nearly 300 school girls abducted by Islamic extremists but fears using force to try to free them could get them killed, the country's chief of defense said Monday. Nigeria's chief of defense staff Air Marshal Alex S. Badeh, second from left, and other army chiefs arrive to address the Nigerians Against Terrorism group during a demonstration calling on the government to rescue the kidnapped girls of the government secondary school in Chibok, in Abuja, Nigeria, Monday, May 26, 2014.