Have 5tarboy: USAF Test Pilot School's Test Management Project utilizes new GPS system for better navigation guidance > Edwards Air Force Base > News
![Before GPS and INS, how did aircraft fly across oceans and how much would they be expected to drift? - Quora Before GPS and INS, how did aircraft fly across oceans and how much would they be expected to drift? - Quora](https://qph.cf2.quoracdn.net/main-qimg-cf04e5fe7d91de0a98fc92b33e071c3c.webp)
Before GPS and INS, how did aircraft fly across oceans and how much would they be expected to drift? - Quora
![FAA Files Reveal a Surprising Threat to Airline Safety: the U.S. Military's GPS Tests - IEEE Spectrum FAA Files Reveal a Surprising Threat to Airline Safety: the U.S. Military's GPS Tests - IEEE Spectrum](https://assets.rbl.ms/26144231/origin.jpg)