The U.S. Missile Defense Agency conducted a precision tracking demonstration with a General Atomics MQ-9 Reaper in the Pacific late Aug. 8, an official said.

The head of the Pentagon’s research and engineering arm says it is premature to determine if the country’s hypersonics technology programs are redundant.

A senior DOD official says a space-based interceptor to go after ballistic missiles is a “relatively easy technological challenge."