(From The Washington Free Beacon)
Michael Griffin, the under secretary of defense for research and engineering, said Tuesday the Pentagon has not deployed “adequate” defenses against the highly maneuverable and difficult-to-detect weapons being aggressively pursued by U.S. adversaries. . . .
Hypersonic weapons are launched atop ballistic missiles and travel five times the speed of sound, or more than 3,836 miles per hour. They are capable of maneuvering on the edge of the atmosphere where they can strike targets globally in minutes.