The united states is racing to field a hypersonic spy and strike aircraft that can cruise at mach 6, but the new sr-72 darkstar is already drawing warnings that its technical foundations may not match its. Key points and summary – a futuristic warfighting concept envisions the hypersonic sr-72 darkstar acting as a mothership or quarterback for u. s. Air dominance.

As of 2025, no confirmed flight tests have occurred and the sr‑72 remains a design.