Clinton W. Taylor in National Review Online solves the riddle of the Syrian musicians who scared Anne Jacobsen inflight--they were, in fact, musicians:
"Annie Jacobsen's recent piece for WomensWallStreet.Com made waves. Her account of flying with her family while 14 Middle Eastern passengers acted in a threatening and apparently coordinated manner makes for a terrifying read. Her article captures her sickening sense of both uncertainty and inevitability as what might possibly have been the next 9/11 unfolded around her.
Fortunately, nothing of the sort happened. "