A huge search operation involving the Egyptian, Greek, French and British military is continuing in the Mediterranean Sea. EgyptAir flight MS804 was en route from Paris to Cairo with 66 passengers and crew on board when it dropped off the radar at 37,000 feet. The loss of another passenger plane raises major business issues for carriers everywhere. John Strickland is a former airline industry chief, and the founder of JLS Consulting, looked at the industry implications.