That is where Lufthansa has their flight academy.
They also own this private airport in the desert SW of Phoenix
https://www.google.com/maps/place/Mobile+Airport/@33.1122155,-112.2694011,1828m/data=!3m1!1e3!4m2!3m1!1s0x0:0x9803d6082b08ac20
wonder if this is the same flight school some of the 9-11 wannabe pilots tried to get training?