I'd also add that you can plant rose bushs around the fense/yard's outer edge & under windows. Think thorns are nature's barbed wire.

Beyond that I'd board the windows & maybe build a false safe room in the basement to hide the enterance to a real safe room. You might have to lay some block & bust out some concrete but you need atleast an 8x8 space with 6 foot head clearance per 2 people minimum.

You could also build a spider hole type dug out position in the backyard covered with a sod trap door in a corner of the yard with lil to no traffic. If things get too hot hiding out in the house you have a close proximity hide.

I'd also suggest getting a electro-muscle stimulator for those moments of no physical activity. Not allot you can do really...