It happened once, and I'm sure it could happen again.
I first heard about this this morning and traffic was a nightmare because all bases [Ft. Shafter, Hickam, Pearl Harbor, Schofield, Wheeler, and KBay]. were doing 100% ID and vehicle checks
It's scary to hear about this. My house is literally 5 minutes away from Pearl Harbor. I don't know what I would do if something like that were to happen here.