(Reuters) – A U.S. Navy sailor was found not guilty on Friday of starting a fire that destroyed the amphibious assault ship Bonhomme Richard in San Diego in 2020. Seaman Recruit Ryan Mays was acquitted of charges of arson and the willful hazarding of a ship, Commander Sean Robertson, a spokesman for the U.S. 3rd Fleet, said in a statement. The decision followed a two-week court-martial in which Navy prosecutors argued that Mays, who was 19 at the time of the blaze, started the fire due to disgruntlement with his work. Defense lawyers said lithium-ion batteries or a spark from a short on a fork…