Phoenix Area Helicopter ATC: What is "Hee-lah" (Gila?) One, and what is the 101 transition? I've been listening to the Phoenix Tower LiveATC feed, and I hear references to "Hee-lah" (Gila?) One and the 101 transition with helicopters (see audio files below):

Angel-Five

TV-3

TV-15

Does anyone know what these are? References would be appreciated if possible. Thanks!
The Gila is a river that runs through Arizona, so that may be a visual reporting point for incoming aircraft.