Boats combat a fire on board the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020. Picture taken July 12, 2020. U.S. Navy/Mass Communication Specialist 2nd Class Austin Haist/Handout via REUTERS

Smoke rises from a fire onboard the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020.

U.S. Navy helicopters and city firefighters continue fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.

Firefighting boats spray saltwater onto the U.S. Navy amphibious assault ship USS Bonhomme Richard as smoke rises from a fire onboard the ship at Naval Base San Diego, California, U.S. July 12, 2020.

Sailors aboard the U.S. Navy amphibious assault ship USS Bonhomme Richard prepare to fight a fire aboard the ship at Naval Station San Diego, July 12, 2020. U.S. Navy/Mass Communication Specialist 1st Class Jason Kofonow/Handout via REUTERS

Boats combat a fire on board the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020. Picture taken July 12, 2020. U.S. Navy/Mass Communication Specialist 3rd Class Christina Ross/Handout via REUTERS

U.S. Navy helicopter and city firefighters continue fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.

U.S. Navy helicopters continue fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.

Port of San Diego Harbor Police Department boats combat a fire on board the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020. U.S. Navy/Mass Communication Specialist 3rd Class Christina Ross/Handout via REUTERS

Shipyards are seen amid haze as smoke rises from a fire onboard the U.S. Navy amphibious assault ship USS Bonhomme Richard (not pictured) at Naval Base San Diego, California, U.S. July 12, 2020.

Smoke rises from a fire onboard the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020.

Port of San Diego Harbor Police Department boats combat a fire on board the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020. U.S. Navy/Lt. John J. Mike/Handout via REUTERS

Sailors aboard the U.S. Navy amphibious assault ship USS Bonhomme Richard discuss a fire aboard the ship at Naval Station San Diego, July 12, 2020. U.S. Navy/Mass Communication Specialist 1st Class Jason Kofonow/Handout via REUTERS

A U.S. Navy helicopter and city firefighters continue fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.

Port of San Diego Harbor Police Department boats combat a fire on board the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020. U.S. Navy/Mass Communication Specialist 3rd Class Christina Ross/Handout via REUTERS

Sailors and Federal Fire San Diego firefighters combat a fire aboard the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Station San Diego, July 12, 2020. U.S. Navy/Mass Communication Specialist 1st Class Jason Kofonow/Handout via REUTERS

U.S. Navy helicopters and city firefighters continue fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.

Smoke rises from a fire onboard the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020.

Smoke rises from a fire onboard the U.S. Navy amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, California, U.S. July 12, 2020.

U.S. Navy helicopters and city firefighters continue fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.

A U.S. Navy helicopter continues fighting a fire on the amphibious assault ship USS Bonhomme Richard at Naval Base San Diego, in San Diego, California, U.S. July 13, 2020.