Make the noise stop!

You know those Emergency Broadcast System tests that you sometimes hear on the radio or television? Picture one of those at full volume and you have something like what has been going on in my building. Is is a fire drill? No! Is it a tornado drill? No! It is a "shelter in place" drill, where we all just stay inside the building while the alarming tones keep us from being able to do any work. Do we actually have to have a drill to practice staying inside the building? Are they afraid someone is going to snap and run screaming out into the parking lot? I completely lost my train of thought when the noise started. If it had gone on much longer I would have gotten a headache.