(CNN) -- The U.S. Navy has called off the search for two crew members of a helicopter that went down off the California coast this week, saying Friday that "aircrew survivability was unlikely."
On Wednesday, the Navy recovered the bodies of three crew members from the HH-60 Seahawk helicopter that went down off the coast of Southern California and Mexico on Tuesday night.
Searches for the remaining two continued through Thursday, the Navy said in a written statement. It is now focusing its efforts on finding the wreckage of the helicopter, it said.
Three mine countermeasure ships have been involved in the search for the aircraft, and one, the USS Pioneer, will continue to search Friday, the Navy said.
The helicopter went down during training operations with the USS Nimitz.
The identities of those on board the helicopter were not released.
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