In a fighter, the cockpit is too cramped and the weight&#x2F;balance figures too tight to allow for backup nav systems, other than a compass.  With it, they could drop down and follow a road or power-line home (at the expense of greater fuel consumption and exposure to hostile ground fire).  But if they still have an operating radio, they&#x27;d probably call air traffic control or an E-3 Sentry for directions.  Larger planes like the B-52 might still have their radio beacon equipment installed.