Once known as Hartley18
Join Date: Aug 2007
Location: Melbourne, Australia
Thanked 85 Times in 85 Posts
Rep Power: 11
It sounds to me like some kind of lock-down area that bad guys can't shoot their way into.
Personally, I'm surprised they don't just avoid the area entirely rather than go to the trouble of (what amounts to) rebuilding the bridge superstructure...
A bad day on a boat beats a good day in the office