While Roald Dahl was famous for making gremlins known worldwide, many returning Air Servicemen swear they saw creatures tinkering with their equipment. One crewman swore he saw one before an engine malfunction that caused his B-25 Mitchell bomber to rapidly lose altitude, forcing the aircraft to return to base. Folklorist Hazen likewise offers his own alleged eyewitness testimony of these creatures, which appeared in an academically praised and peer-reviewed publication, describing an occasion he found "a parted cable which bore obvious tooth marks in spite of the fact that the break occurred in a most inaccessible part of the plane". At this point, Hazen states he heard "a gruff voice" demand, "How many times must you be told to obey orders and not tackle jobs you aren't qualified for? – This is how it should be done." Upon which Hazen heard a "musical twang" and another cable was parted.