Nonetheless, they had expired visas and it could have indeed been a dry run.
They 14 syrian "musicians" with expired visas:
1. should not have been allowed to board the plane in damascus with expired visas.
2. should not have passed immigration and customs in detroit with expired visas.
3. should not have been released after fbi questioning at LAX with expired visas
These syrian "musicians" flying on one way tickets and expired visas are allowed to terrorize a flight? It's a disgrace!