Once is bad, but twice in just over a week is a problem. A U.S. Navy F/A-18 fighter jet fell off the USS Harry S. Truman aircraft carrier into the Red Sea yesterday, marking the second such incident in eight days. The jet, worth about $60-million, fell off the flight deck after the plane’s tail hook failed to catch the arresteing wire as it was landing . No sailors were hurt, and the Navy is investigating what happened. Last week, another F/A-18 and a tow tractor fell into the sea when the crew lost control during a sharp turn to avoid Houthi rebel attacks. The Truman is part of a strike group fighting Houthi forces in Yemen, and the area is risky due to frequent missile and drone attacks.