Calling the seizure "piracy", President Ford ordered a military response to retake the ship and its 39-man crew, mistakenly thought to be on Koh Tang Island. On May 13, two A-7D Corsairs saw the 39 man crew board a fishing boat and saw people disembarking fishing boats at Koh Tang Island. They assumed that the Mayaguez crew was on the island. Elements of the 1st Battalion, 4th Marines, the 2nd Battalion, 4th Marines, and the 2nd Battalion, 9th Marines, were flown to an advanced staging of a joint US Task Force. On May 14, the Marines from Company D, 1st Battalion, 4th Marines boarded the Mayaguez only to find it deserted and raised the American flag. A Thai fishing boat with a Thai crew and the 39 crew members of the SS Mayaguez which had been set free, approached the USS Wilson.