The degree to which there is a cover-up in progress by the FBI and DHS is epic. This makes Fast & Furious and Benghazi look like child's play. Where are these bomber's firearms traced to? We'll never get an answer to that.
Look on the bright side... the narrative has thus far been they were just normal yutes that snapped with no real terrorist connections. So, if the attacks on Islamic countries motivated them one can logically conclude that either: a) any normal Muslim youth is a potential terrorist willing to murder innocent women and children, or b) it has nothing to do with Islam and any normal American liberal youth is a potential terrorist willing to murder innocent women and children.