Not had any worries so far, but jeeze they did not word it well, also every time i hear of these terrorism threats i tend to laugh, not because they are false, but because most of the approaches where doomed to fail,
To anyone with an idle mind driving through the city you would notice pinch points in the traffic etc that a single accident can stall half the city for a few hours, or hear about a train signalling problem in one location that shuts down half the network for a few hours, etc, not that i have any intention on ever acting on these thoughts, but a city is not hard to topple for a day, and i see that as far more terrorism to the people than one guy trying to blow up 2-3 others every few months
There are many more pinch points to the gas and power network in every city, but i think that would already get me called up for review,