Growing up in El Paso, there were a lot of ways for teenagers to get into trouble.  We could go across the border and drink (back when it was safer to do so) or go out in the desert and drink.  Basically what I'm getting at is that there were plenty of opportunities for minors out there to drink.

El Paso is right on the border with New Mexico, so when there were huge groups of teenagers out in the desert, it became tough for law enforcement to know who had jurisdiction to break up the party and issue citations or perform arrests.  

To solve this issue, the New Mexico and Texas State Troopers formed an alliance called "The Wolf Pack" that would roll out to the parties together.  That way, once they figured out which state the party was in, the appropriate team could do the work...