People buy go-phones in bulk all the time to send overseas for a huge mark up. I don't understand how anyone could possibly think that could be related to terrorism.
Propane tanks get stolen all the time, just like everything else. You ever try carrying a full one? You think a terrorist is going to be able to lug one into SDC, and then figure out a way to actually make it explode? Get real.
Everything is a soft target, and the whole point of terrorism is to make you scared to do anything. Besides, we already have plenty of nuts running around with guns to be afraid of anyway.