FBI: No Explosives Found on United Jet in Denver Authorities Say Qatari Diplomat Told Air Marshals, 'I'm Lighting My Shoes' FBI agents say no explosives were found in the shoes of a Qatar diplomat who was subdued by federal air marshals on a United flight to Denver Wednesday night after allegedly telling the marshals, "I'm lighting my shoes on fire." Authorities say the diplomat was wrestled to the ground and two F-16 fighter jets were dispatched to accompany the 757 on the final 40 minutes of its flight to Denver. Flight 663 originated from Washington Reagan airport. A US security...