EgyptAir Flight MS804: Three Air Marshals Were Aboard Crashed Jet

Three air marshals were among the 66 people aboard EgyptAir Flight MS804 that crashed while flying over the Mediterranean Sea early Thursday, authorities said.

France's transport chief Alain Vidalies told reporters that having that many security officers on such a flight was "the usual practice." He added that the plane — which can carry up to 189 passengers — was not transporting any freight.

READ MORE:http://www.nbcnews.com/storyline/egyptair-crash/egyptair-flight-ms804-three-air-marshals-were-aboard-missing-jet-n576621