Yes. The traits/facilities do not prevent events from happening, they just shift the targets around. I am not sure if a system protected by a 100% facility can be hit by a random event or not if there are open systems elsewhere with appropriate targets. But, if all systems have the same level of protection (even 100%), it all evens out and gets you back to the starting chance of each system being hit by an event.

This does not make your Epic facilities useless, of course.
Edit:
Beat to post, for once.
[ October 01, 2003, 21:48: Message edited by: Imperator Fyron ]