The CH-53 Super Stallion crashed Feb. 6, 2024, during a night flight when it hit a mountain near Pine Valley, California, killing all five Marines aboard.
The U.S. military and Guam emergency response teams logged 120 hours and traversed 11,000 square nautical miles in an effort to find the missing sailor.
The ADSB safety system has become a flashpoint as some have pointed to its likely lack of use by the helicopter as a potential cause of the Jan. 29 crash.