A U.S. Navy MH-60S Seahawk made an emergency water landing in the Arabian Sea on Wednesday morning; three of the four crew were rescued and one crew member was missing, the Navy said.
The helicopter was assigned to a U.S. aircraft carrier, the U.S. military said.
An MH-60S Seahawk is a twin-engine helicopter that can be used for search and rescue, special operations and combat support.
The Navy said a search continues for the missing crew member.