Major hole in theory:
Regular black market arms dealers would not shoot for 10 minutes to kill dozens of people. Only very motivated person or persons would do that.
>Regular black market arms dealers would not shoot for 10 minutes to kill dozens of people. Only very motivated person or persons would do that.
They were low lifes, probably a leader and two bodyguards. Two fired from windows, one down hall waiting for FBI. Guard showed up, they shot him, then went WTF? and escaped.