Our airport (KMFR) also requires it.  They are under intense pressure to comply with the TSA pressure.  The TSA here routinely uses unmarked vehicles to tailgate gate users at the gate to attempt to get entry via piggybacking.  We also have airport security hiding at locations and using binoculars to see if gate users are stopping after entry/exit to allow the gate to fully close before departing.  $1,000 fine if you don't.  We call them the "gate police".  Their more recent push is checking vehicles entering without the required insurance; $1,000,000 liability.  My insurance company laughed when I inquired about adding that much to my 2004 Honda Metropolitan moped. 

 

The fence only keeps the honest people out.  We have seen a relative of a hanger renter go over the fence in about 5 seconds.  He tossed his coat over the 3 rows of barbed wire and over he went.

 

Gary Edwards

LNC2