The Pentagon's technology chief emphasized the importance of bridging the "valley of death" by creating pathways for innovation through the government's labyrinthine acquisition system, especially during a time of increased military challenge from China. Heidi Shyu, under secretary of defense for research and engineering, said the United States is facing a “highly unstable” global security environment, citing numerous threats abroad, but noting the true threat to stability is the People’s Republic of China. “The PRC is our only rival with...