They'd done their homework.

For two days, they'd tailed her.  They watched where she went (not many places, but it was a great primer on how to get around the vast city), who she met with (just a couple of people, but nobody familiar - not that anybody really was at this point), and what she did (mainly talk).  There was a pattern and it was Ghost who finally worked it out. 

When it came to figuring things out, like where they were and where they were going, Nine had proven himself to be particularly useful.  The vehicle the group had appropriated had a navigation system which Nine was able to use to begin to answer some of the questions which had been staring them in the face since their arrival.

Sound...the most terrible combination imaginable of glass breaking, fingernails on chalkboard, and someone crushing a parakeet under their boot.  It was loud to the point of painful insanity.  It was mind-shattering.

The cop who had run for the gate tripped over his own feet and slammed right into it, only to rebound backwards down onto the lawn where his body twisted from the intense aural assault.  Groans came from the cops on the ground and the other man who had surendered to them.  Even with his hands clamped firmly over his ears, Al's head throbbed from the sound's impact.  Ghost, Betty, and NotBetty felt their teeth rattle in their sockets.