U.S. Homeland Security Secretary Jeh Johnson greets Transportation Security Administration (TSA) agents after viewing TSA security operations and U.S. Customs and Border Protection Facility at Los ... more 
U.S. Homeland Security Secretary Jeh Johnson greets Transportation Security Administration (TSA) agents after viewing TSA security operations and U.S. Customs and Border Protection Facility at Los Angeles International Airport in Los Angeles February 20, 2014. U.S. authorities issued a warning on Wednesday to airlines flying to the United States to watch out for militants who may have hidden bombs in their shoes, U.S. government sources said. REUTERS/Kevork Djansezian (UNITED STATES - Tags: POLITICS TRANSPORT) less 
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Reuters | Photo By KEVORK DJANSEZIAN / REUTERS
Thu, Feb 20, 2014 7:54 PM EST