Home Defense

 This evening, as I was about to enjoy my first martini, I noticed a very odd sight outside my back patio fence.

My condo is separated from the main road (two lane suburban blacktop) by a six foot tall berm, landscaped with pine trees.  Here are two views:

View From the Patio

View From the Street

Note that there's a barely noticeable path that leads back into the condo neighborhood.  So, like I say, I'm talking on the phone when I happened to look out my patio window, and I see a black teenager dressed in a purple hoodie making his way up the berm.  He stopped about two steps past the crest of the berm, and he sees me seeing him.  I didn't recognize him.

I slid my hand into my pocket, put the phone down, and went over to open the door with the intention of finding out just who the fuck this is and what he's doing.  He left at a brisk walk.

My thought is that I need a motion detector attached to a flood and maybe an alarm.  If anyone gains access to my patio, they're trespassing and likely pose a threat.  Of course, criminals are always looking for an easy mark, which I kind of hope I'm not.

The other question that I asked myself had to do with racial prejudice and the teenager being black.  What if he'd been white?  Then I wondered just what the everlasting fuck was wrong with me.  I don't care what color he was, he had no business scaling the berm - it's off limits to non-residents.

So, motion detectors and some kind of useful alarm system.  Any suggestions?