Triggers In CTF-Face

[STC_Wacky]

I've been taking a look at all of the CTF maps through the UnrealEd to try and find any hidden secrets that I didn't know about. I didn't find many but I found something in Facing Worlds that I could explain.
There are four triggers on the walkways between the two towers that don't seem to do anything. Does anyone know what they do?

"Fighting for peace is like screwing for virginity"

[PuF]STC_Wacky

[phishedNET]

Maybe those are what tell the bots when to say "the flag carrier is here"? I really have no clue what I am talking about, but that is my best guess.

http://www.planetunreal.com/images/bullet2.gif
That'll learn ya!
MeetTheFreak: Quasimodo's Lair (http://www.phished.net/me)