U.S. ‘behind the curve’ of hypersonic missile technologies of Russia, China By Samuel Culper • March 12, 2018March 11, 2018 Share this:TweetEmailPrint Related Samuel CulperSamuel Culper is a former Intelligence NCO and contractor. Iraq(x1)/Afghanistan(x2). He now studies intelligence and warfare. Join nearly 9,000 people already receiving the Forward Observer Dispatch Email Address