The USS Fitzgerald collided with a Philippine-flagged container ship off the coast of Japan on June 17, 2017. The $1.8 billion destroyer, manned by a 300-member crew, had been steaming on a secret mission to the South China Sea when it was struck by a cargo ship more than three times its size. Seven sailors died. Eugene Hoshiko/AP hide caption
The damaged section of the USS Fitzgerald is seen at the U.S. naval base in Yokosuka, southwest of Tokyo. Eugene Hoshiko/AP hide caption
Two U.S. F/A-18s and the Japan Air Self-Defense Force's F-15 fly over the USS Ronald Reagan ahead of a joint exercise at an undisclosed location earlier this month. AP hide caption
The USS John S. McCain sails toward a naval base in Singapore in August, the massive dent in its side visible on the right side of the frame. The destroyer had collided with a tanker just hours before — the second such deadly collision involving a U.S. Navy warship in several months. Roslan Rahman/AFP/Getty Images hide caption
Damage to the USS John S. McCain is visible as the guided-missile destroyer steers toward Changi naval base in Singapore following a collision with the merchant vessel Alnic MC in August. Mass Communication Specialist 2nd Class Joshua Fulton/AP hide caption
Erin Rehm receives the American flag from Vice Adm. Jan Tighe during the graveside service for her husband, U.S. Navy Fire Controlman 1st Class Gary Rehm Jr. at Arlington National Cemetery on Aug. 16. He was one of seven sailors killed on June 17 when the USS Fitzgerald collided with a cargo ship off the coast of Japan. A Navy report says Rehm helped rescue one of his shipmates. U.S. Army photo by Elizabeth Fraser/Arlington National Cemetery hide caption
Damage to the port side is visible as the guided-missile destroyer USS John S. McCain steers toward Changi naval base in Singapore following a collision with the Alnic MC tanker on Monday. Mass Communication Specialist 2nd Class Joshua Fulton/AP hide caption
The guided-missile destroyer USS Fitzgerald returns to port after colliding with a merchant vessel in June while operating southwest of Yokosuka, Japan. MC1 Peter Burghart/U.S. Navy hide caption
The USS Fitzgerald returns to Fleet Activities Yokosuka following a collision with a merchant vessel while operating southwest of Yokosuka, Japan. MC1 Peter Burghart/U.S. Navy hide caption