[GO DAWG GO]

I remember working at Rockwell Autonetics in Anaheim, Ca. back in the 80's. The program was called NAVSTAR. This was the early Global Positioning Satellite system.

These Space X rocket boosters probably return in a trajectory like a (PGM) Precision Guided Munition using GPS. controlled by small control surfaces and then during the deceleration burn, controlled by thrust vector actuators. Very impressive.

Still a macro jump in technology IMO