Often as a child you see someone with a learning disability or Down's Syndrome and my mum and dad were always very quick to explain exactly what was going on and to be in their own way inclusive and welcoming.
The tocsin you hear today is not an alarm but an alert: it sounds the charge against our enemies.
That ability to take in your surroundings and sort out the important stuff, to be aware, to be vigilant. Then take all that information, put it together, and see if it makes sense to you.