USS Columbia (SSN-771) undocked in July 16, 2020 from Dry Dock #2 at the shipyard in Pearl Harbor, Hawaii. US Navy Photo
The sailor who killed two contractors and them himself at a repair yard in Hawaii had shown signs of “long-developing problems that in aggregate should have raised concerns about his mental condition,” which would have likely disqualified him for submarine service, according to an investigation into the Dec. 4 incident that was released on Tuesday.
Machinist Mate Auxiliary...