[Travis McGee]

Another aspect not covered: three were more than one air marshals on board the flight.

This is not an accident or coincidence! Only flights into DC always get an air marshal, and only a small fraction of other flights ever get even one. This indicates that the Syrian band DID get extra attention prior to takeoff, and the DHS decided to add extra security for the flight.

[risk]

...[the article indicate that were] more than one air marshals on board the flight.

Good point.