U.S. Secretary of State Hillary Rodham Clinton walks from her C-17 military transport upon her arrival in Tripoli Libya, Tuesday Oct. 18, 2011. The Obama administration on Tuesday increased U.S. support for Libya’s new leaders as Secretary of State Hillary Rodham Clinton made an unannounced visit to Tripoli and pledged millions of dollars in new aid, including medical care for wounded fighters and additional assistance to secure weaponry that many fear could fall into the hands of terrorists. (AP Photo/Kevin Lamarque, Pool)