When a rescue force again failed to materialize, Dengler decided to find one of the parachutes from a flare for use as a possible signal. He found one on a bush and placed it in his rucksack. On July 20, 1966, after 23 days in the jungle, Dengler managed to signal an Air Force pilot with the parachute. A 2-ship FLIGHT of Air Force Skyraiders from the 1st Air Commando Squadron happened to fly up the river where Dengler was. Eugene Peyton Deatrick, the pilot of the lead plane and the squadron commander, spotted a flash of white while making a turn at the river's bend and came back and spotted a man waving something white. Deatrick and his wingman contacted rescue forces, but were told to ignore the sighting, as no airmen were known to be down in the area. Deatrick persisted and eventually managed to convince the command and control center to dispatch a rescue force. Fearing that Dengler might be a Viet Cong soldier, the helicopter crew restrained him when he was brought aboard.