Correct. As I recall the story, he flew the 707 down to some big airport, and then the JetStar/VC-130 to his ranch.
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Bergstrom AFB was the transfer. The main gate entrance was renamed to Presidential Blvd at some point.
I wasn't around for LBJ and don't remember the street names as a kid, but I seem to recall Presidential Blvd wasn't the main entrance. However, the two entrances weren't too far apart off the same road.
It might have been that what turned into Presidential Blvd started out as a hole in the fence. That would have been going in/out past the old TAC NCO Academy of the West, I think. Now I believe it's the cargo entrance to ABIA, but may be wrong.
The main gate, which is now the ABIA entrance ran past the old Consolidated Base Personnel Office (CBPO or, at BAFB, known as "the donut" which is now a hotel, Hilton, I think.
The current ABIA terminal is about where the old commissary used to be. The base housing where my older brother and sister grew up in was sold off for $1 a house, I think, with the stipulation that the house had to be moved off the property pretty quickly.
My dad retired out of BAFB in '73 and I was born that same year. Grew up going to the base until it closed in the 90s. At the time, I was bitter about it, but the more I learned about the Austin's mindset at the time, it makes sense for what happened and was probably best in the long run.
I'll defer here to folks about 10 years older than me to fill in the gaps correct the info.