The Pentagon this summer plans to launch a pair of ultra-fast, maneuvering targets in separate tests to calibrate space-based sensors recently placed in orbit as part of the U.S. military’s latest efforts to assemble a suite of new technologies to counter long-range hypersonic glide vehicles. The Missile Defense Agency, in concert with the Space Development Agency, plans to observe two sounding rockets in flight as part of the effort to bring online the pair of Hypersonic and Ballistic Tracking Space...