James Tibbets, son of Brig. Gen. Paul W. Tibbets, Jr., says Friday’s visit to Hiroshima by U.S. Ambassador John Roos is an act of contrition that his late father would never have approved.

“It’s an unsaid apology,” Tibbets, 66, told FoxNews.com from his home in Georgiana, Ala. “Why wouldn’t it be? Why would [Roos] go? It doesn’t make any sense.

“I know it’s the anniversary, but I don’t know what the hell they’re trying to do. It needs to be left alone. The war is over.”