Recently I had to think of the April 19, 1989 gun turret explosion aboard the battleship USS Iowa that killed 47 sailors whose families never saw justice.
"The New York Times in 1993 severely criticized the U.S. Navy for a series of botched investigations, including the Tailhook scandal, the Iowa explosion, security breaches at the U.S. embassy in Moscow, Russia, and a problematic investigation into the murder of a homosexual sailor in Yokosuka, Japan. The newspaper stated, 'Each fumbled inquiry may have exposed a different U.S. Navy foible. The repeated bungling suggests a systemic problem in the Naval Investigative Service—and a management failure at the highest levels.'"
https://en.wikipedia.org/wiki/USS_Iowa_turret_explosion