A frail King Bhumibol Adulyadej (second from left) — along with Crown Prince Vajiralongkorn (from third from left), Princess Chulabhorn, Princess Sirindhorn and Consort Princess Srirasm — arrives at Klai Kangwon Palace in Thailand's Prachuap Khiri Khan province on Thursday, Dec. 5, 2013, before a ceremony to celebrate the Thai king's 86th birthday. (AP Photo/Royal Household Bureau)