I get warnings on my Verizon phone. Some are desirable (there was a warning for last month's tornado, although I wish it was more than about
45 seconds in advance). Most are annoying.So, when you hear that tone, the first thing you think of is that it's a test, not that it's a possible emergency.
Same thing with the fire drills at school. The first think I think of when that alarm sounds is NOT that the building's on fire.