Police officers watch passengers at Domodedovo Airport in Moscow on Monday, Jan. 24, 2011, after an explosion ripped through the airport's arrivals hall. (AP Photo/Ivan Sekretarev)

Photo by: Ivan Sekretarev

Police officers watch passengers at Domodedovo Airport in Moscow on Monday, Jan. 24, 2011, after an explosion ripped through the airport's arrivals hall. (AP Photo/Ivan Sekretarev)