Lockheed Martin says they are ready to begin thermal vacuum testing—“one of the most significant program milestones”—for the first Space-based Infrared System (SBIRS) geosynchronous orbit satellite.
The Senate Armed Services subcommittee on strategic forces heard testimony from the Defense Department’s top missile defense leaders and demanded to know why the Missile Defense Agency's proposed $9.6 billion fiscal 2023 budget will not yield more reliable defense against hypersonic weapons already being fielded by adversaries, including Russia on…