US air force officers inspect refueling equipment of a C-130 aircraft in the airbase of Sigonella, Sicily, Tuesday, March 22, 2011. Moammar Gadhafi's forces shelled rebels regrouping outside a strategic eastern city on Tuesday and his snipers and tanks controlled the streets of the last opposition-held city in the west, signaling a prolonged battle ahead. An American fighter jet crashed over North African country, both crew ejecting safely. The U.S. Africa Command said both crew members were safe after what was believed to be a mechanical failure of the Air Force F-15. (AP Photo/Andrew Medichini)