Accelerated VS. Old Fashion Flight Training

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At one time pilots used railroad tracks and water tower town names. Flight training includes situation awareness as well as traveling point to point where at one time there was a very distinct difference between homing on the expected landing place and navigating by dead reckoning involving plotting a track. What my post does is say in 1968 the military services decided to get rid of everything except homing on the expected landing place. That didn't exactly happen which leads to the "rambling." Do you know what the difference is between a VOR/TAC and a TACAN? What DME means. Now where do these questions come from? Definitely not out the window. Sometimes the flight is in segments.