The Defense Department is looking for commercial solutions to develop and demonstrate on-orbit tactically responsive space systems, according to a notice posted yesterday. “This prototype will further advance the risk reduction for dynamic space systems to conduct their missions while demonstrating a contingency response capable of inspecting and characterizing a threat on urgent operational timelines,” DOD’s Defense Innovation Unit said in the notice. Contractors, DIU said, must be able to launch payloads within 24 hours of notice, match the orbital...