The U.S. and China are developing hypersonic missiles, hard-to-detect weapons that can reach at least five times the speed of sound. WSJ compares the missiles’ design differences as the race to test and deploy them changes the global balance of military power. Photo illustration: Sharon Shi U.S. vs. China This original video series explores the rivalry between the two superpowers’ competing efforts to develop the technologies that are reshaping our world. More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com/ Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #Hypersonic #China #WSJ