while you were sitting in your house/apartment, listening to the radio while eating breakfast, the radio was suddenly interrupted with a very much important announcement.

Radio:"A NUCLEAR WARHEAD HAS BEEN SENT OVER TO OUR COUNTRY BY OUR ENEMY COUNTRY. IT IS LIKELY THAT THE ENTIRE AREA WILL BE IMPACTED, SO IT WOULD BE FOR THE BEST IF YOU WOULD MAKE A SHELTER OUT OF ANYTHING YOU COULD FIND AND FILL UP AS MANY WATER BOTTLES POSSIBLE, FIND FOOD, ET CETERA. REMEMBER, YOUR SURVIVAL IS, RIGHT NOW, THE BIGGEST CONCERN."

You looked at the sky and saw a small speck overhead, rapidly approaching. That is the warhead. You have mere minutes until it detonates, turning the once quiet area into sooty, burnt, ruined rubble.