In a rebroadcast from 7/23/97, Art Bell was joined by Col. Phillip Corso and Dr. John Alexander discussing alien artifacts gleaned from the Roswell incident. Corso said in 1961 he was given a file cabinet from his superior General Trudeau which contained material recovered from ET craft. He was instructed to use these items for "utilization and exploitation," farming the objects out to various companies such as Bell Labs to reverse engineer and further develop. Among the technologies he said arose from this were: night vision, fiber optics, food irradiation, integrated circuits, and lasers.