Libyan officials have said they are cooperating closely with U.S. authorities in investigating Tuesday 's attack in Benghazi , which they have strongly condemned . U.S. Defense Secretary Leon Panetta talks to reporters en route to Asia . Hide Caption U.S. military capabilities in the region have been `` enhanced '' in recent days , he says . Panetta praises Libyan officials ' `` strong effort '' in response to a deadly attack .
U.S. Defense Secretary Leon Panetta talks to reporters en route to Asia . Hide Caption U.S. military capabilities in the region have been `` enhanced '' in recent days , he says . Panetta praises Libyan officials ' `` strong effort '' in response to a deadly attack .