 The lack of insignia possibly indicated that the aircraft was operating on behalf of another U.S. government agency.After some local sorties, possibly to test the onboard equipment, the aircraft departed to Kandahar Airport, Afghanistan via NSA Souda Bay, Crete.The aircraft then flew a number of sorties out of Kandahar, presumably carrying a classified sensor package and returned to Ellington Field via Souda Bay and Mildenhall.