Thailand's King Maha Vajiralongkorn, reviews the honor guard in Bangkok, Thailand, Tuesday, Dec. 3, 2024. The parade as a part of celebrate the honor the King's 72nd birthday. (AP Photo/Sakchai Lalit)

Princess Sirivannavari Nariratana rides her horse during the trooping of the colors to honor King Maha Vajiralongkorn in Bangkok, Thailand, Tuesday, Dec. 3, 2024. (AP Photo/Sakchai Lalit)

Thai royal guard march during the trooping of the colors to honor King Maha Vajiralongkorn in Bangkok, Thailand, Tuesday, Dec. 3, 2024, in a parade as part of celebrations to honor the King's 72nd birthday. (AP Photo/Sakchai Lalit)

Thai royal guard march during the trooping of the colors to honor King Maha Vajiralongkorn in Bangkok, Thailand, Tuesday, Dec. 3, 2024, in a parade as part of celebrations to honor the King's 72nd birthday. (AP Photo/Sakchai Lalit)

Thailand's King Maha Vajiralongkorn, standing in a car right, and Queen Suthida, standing in a car left, review the honor guard in Bangkok, Thailand, Tuesday, Dec. 3, 2024, to celebrate the King's 72nd birthday. (AP Photo/Sakchai Lalit)

Thailand's King Maha Vajiralongkorn reviews the honor guard during a military parade in honor of the King's 72nd birthday in Bangkok, Thailand, Tuesday, Dec. 3, 2024. (AP Photo/Wason Wanichakorn)

Thai royal guard march in front of a portrait depicting King Maha Vajiralongkorn and Queen Suthida, during the trooping of the colors to honor King Maha Vajiralongkorn in Bangkok, Thailand, Tuesday, Dec. 3, 2024, in a parade as part of celebrations to honor the King's 72nd birthday. (AP Photo/Sakchai Lalit)