Yep...they do a lot of test flying there. I remeber when Vought lost 4 personnel when testing the XC-142 VTOL Cargo plane at the NAS over in Grand Prairie back in the 60s. Hard on my Dad, a couple of them were close friends of his.
I was raised out west of Sanger, about 6 miles off the freeway and nine miles north of Krum, TX. All of that Northwest of Denton.
For several years when my wife and I lived out there when our kids were young, I would communte in on an FM highway down to Ft. Worth when I was working at Motorola Mobile products.
Been here in Idaho for the last 14 years and love it. Sunk a tap root.