ABC News October 1, 2022

Sailor found not guilty in fire that destroyed $1.2 billion USS Bonhomme Richard

WATCH: Judge finds sailor not guilty in Navy ship fire

A sailor accused of setting a $1.2 billion Navy amphibious assault ship ablaze in San Diego was found not guilty by a military judge Friday.

Ryan Sawyer Mays was charged with aggravated arson and willfully hazarding a vessel after a four-day inferno in July 2020 relegated the costly USS Bonhomme Richard to a scrap yard in Texas.

Elliot Spagat/AP
Navy sailor Ryan Sawyer Mays, reads a statement after his acquittal of setting a fire that destroyed the USS Bonhomme Richard, Sept. 30, 2022, in San Diego.

Mays maintained his innocence from the beginning.

"Thankfully the military judge today reaffirmed that innocence," said Lt. Cmdr. Jordi Torees, Mays' lead defense attorney.

MORE: Navy decides to scrap USS Bonhomme Richard after major fire
Specialist 1st Class Patrick W. Menah Jr/U.S. Navy
Navy and civilian fire crews fight a fire aboard the amphibious assault ship USS Bonhomme Richard, July 13, 2020, in San Diego.

After his not guilty verdict Friday, the 21-year-old told reporters gathered outside the courthouse he is eager move on with his life.

"I've lost friends, I've lost time with family, and my entire Navy career was ruined. I am looking forward to starting over," Mays said..

Prosecutors presented no physical evidence against Mays, instead relying on a witness whose account changed over time and an allegation that Mays was disgruntled from failing to make it into the Navy SEALs, according to Mays' former attorney Gary Barthel, who attended the trial in person.

MORE: New details about sailor charged with setting blaze on USS Bonhomme Richard
Julie Watson/AP, File
US Navy sailor Ryan Sawyer Mays enters a U.S. Navy courtroom, Aug. 17, 2022, in San Diego.

Barthel said Mays was "absolutely not" embittered against the Navy after he quit five days into Basic Underwater Demolition/SEAL (BUDS) selection in 2019.

"His dream has always been to make the Navy a career," Barthel told ABC News in August 2021.

MORE: Navy sailor charged with setting blaze that destroyed billion-dollar ship last year
Specialist 1st Class David Mora Jr/U.S. Navy
A helicopter from Helicopter Sea Combat Squadron helps combat a fire aboard the amphibious assault ship USS Bonhomme Richard, July 13, 2020, in San Diego.

But speaking to ABC News on Friday after his former client's winning verdict, Barthel said a future in the Navy is unlikely for the young sailor.

"Here he has an employer that just accused him of committing a crime, threw him in the brig for two months, and now he's just been found not guilty. How would you feel? Would you want to stay with that employer? Probably not. So it's probably best for the Navy and Mays to part ways," Barthel said.

While prosecutors put blame on Mays after the catastrophic fire, the Navy acknowledged a series of leadership and safety failures that exacerbated the fire, punishing more than 20 individuals as a result.