Magnetic, visual, celestial and borrowed-signal navigation have all flown. Buyers still get percentage gains over drifting inertial units instead of error figures they can specify.
The Air Force ordered its drone wingmen into production before choosing their software. Readiness should be judged by autonomy builds and test evidence, not airframes.
Low-power, fixed-site lasers have reached troops and production. Mobile 50-kilowatt lasers and swarm-killing microwaves have not, and nobody publishes availability data.
