To this day I can't figure out why the Viper had so much support. I know it was the favorite of the Director of the Army Missile Laboratory, Dr. McCorkle, in Huntsville but it was such an utter failure in all respects. Later he would poke fun at me when I carried in the AT-4: Here he is with the perfect weapon- it weighs nothing, costs nothing and kills everything (with snark dripping off each word). Well for $700 or so ( proably one fourth the projected Viper cost) it went three hundred yards and punched a 500mm hole through rolled homogeneous armor (UNCLAS). Darn fine weapon and, with a little help on the Hill, the USArmy and others have bought about a million of them at last count. Thanks for the memory Nick.