Another back-engineered, by the U.S., alien technology?

http://www.belfasttelegraph.co.uk/news/world-news/pentagon-test-launches-hypersonic-weapon-in-alaska-then-detonates-rocket-after-four-seconds-30538378.html

The Chinese have back-engineered alien technology?

http://www.washingtonpost.com/news/morning-mix/wp/2014/08/26/the-chinese-are-reportedly-working-on-submarine-that-would-fly-in-an-air-bubble/?tid=hp_mm