the two occurrences, including sabotage of either or both aircraft, and kidnapping of Flight 739 and its passengers. The airline also said that these were merely "wild guesses" and that there was no evidence to support either theory. Possibility of sabotage A Liberian tanker, the SS T L Linzen, reported seeing a bright light in the sky near the aircraft's expected position about 90 minutes after the last radio contact. U.S. military officials described it as being a "bright light strong enough to light a ship's decks". It was reported that the tanker observed a flash of light approximately west of Guam, followed immediately by two red lights falling to the ocean at different speeds. A Civil Aeronautics Board investigation determined that witnesses aboard the tanker also observed what appeared to be vapor trails, and numerous crewmen observed the two fireballs fall into the ocean. The tanker proceeded to the location where the fireballs had been observed to fall into the ocean but was unable to find any trace of the falling objects during their six-hour search. A spokesman at the rescue effort headquarters in Guam said that as time passed with no sign of the aircraft, "more credence is given to the possibility that the tanker may have seen the missing aircraft explode in flight." Officials with the Flying Tiger Line said that their earlier theories of sabotage would be bolstered were the investigation to reveal that an explosion had occurred. The executive vice president of operations said that experts considered it impossible for explosions to occur on the Super-Constellation in the course of normal operation. Additionally he claimed that there was nothing powerful enough aboard the aircraft to completely blow it apart, and that "something violent must have happened." The Civil Aeronautics Board determined that, given the observations of the tanker crew, the flight most likely exploded in midair. As no part of the wreckage was ever found, the CAB was unable to establish a determination of cause. The accident report concluded: See also Aviation safety List of accidents and incidents involving commercial aircraft Other similar incidents and accidents 1990 Faucett Perú 727 disappearance 2003 Boeing 727-223 disappearance Adam Air Flight 574 Air France Flight 447 Arrow Air Flight 1285R – another disaster involving US troop transport Indonesia AirAsia Flight 8501 Malaysia Airlines Flight 370 Varig Flight 967 References External links Listing on Vietnam Wall sought for troops