At Frankfurt, Germany, Fritz von Opel travels just over a mile in the world’s first flight of a rocket-powered airplane. The Rak-1 tops 85 mph but crashes.
Pentagon Cancels $6B GPS Ground System Contract
April 20, 2026
The Pentagon has canceled its contract with RTX to field a ground segment to manage its most capable GPS satellites, a more than 15-year effort beleaguered by software development issues and cost overages.