(1) The field of study began in the 1970s with research into the effectiveness of metal detectors against skyjacking .(2) In less than an hour, it was back over Oak Ridge, with the skyjackers again threatening to crash the plane into the facilities.(3) When I was in FAA, the skyjacker usually took over a plane and asked for large amounts of money.(4) Jerrold Post interviewed for eight hours an Abu Nidal terrorist who skyjacked an airliner and killed five passengers.(5) He found that with the detectors in place from January 1973, the number of skyjacking attempts declined from close to forty a year to one.(6) The record shows that such acts, from the bombing of buildings to skyjacking , in virtually every case have had three characteristics.(7) They have at their disposal what are for all practical purposes human intercontinental delivery systems composed of skyjackers .(8) Here, Massimo freezes it into a Martian soundscape, and thus allows it to escape his grasp in an unremarkable skyjacking .(9) We meet the romantic skyjackers who fought their revolutions and won airtime on the passenger planes of the 1960's and 1970's.(10) Before that time, skyjacking was far more common.(11) It's no anomaly that fifteen of the nineteen suicide skyjackers of came from Saudi Arabia.(12) Most skyjackers , and especially the common criminals, had no idea what life in Cuba was really like.(13) In the first stage, which peaked in 1968, most skyjackers attempted to get to Cuba; in that year, 18 of 22 attempts were successful.