Publicly introduced in October of 1957, the Hawk Missile system was a low-altitude, medium-range surface-to-air missile developed to destroy aircraft and in-flight missiles.
U.D.T. troops were specially trained combat swimmers who could perform tasks like breaching cables and planting limpet mines on enemy boats. Many methods used to train these "Frogmen" are now used to train today's U.S Navy SEALs!