The Coast Guard has suspended its search for two Hungarian students in a Philadelphia duck boat accident.
Petty Officer Crystal Kneen said Thursday the agency only searches "as long as the possibility of survival is there."
The Guard searched for 14 square nautical miles of the Delaware River over 20 hours after a barge rammed into the stalled amphibious tour boat Wednesday afternoon.
Thirty-five of the 37 people on board were rescued.
The two who were missing were a 16-year-old girl and 20-year-old man, both from Hungary.