We're All Doomed

So I just read that tech has been developed for invisibility.  Apparently there's these little nano-dealies that can heat up really quick and copy a similar effect of redirecting light that happens in mirages. 

You heard me right, we can now make junk invisible, and it's for real. Congratulations humanity, now we are all doomed.

It's just one stop before we make all weapons and fighter planes and tanks and really angry dogs invisible, and then anybody and their favourite pooch can surprise attack and kill any of us.  Then we'll have invisible nukes which will land 5 feet from you while you're humming showtunes and you won't know it until firey death ensues.  Thanks for comin' out, hope you enjoyed your life.

Maybe you'll be in the park enjoying a nice sunny day, when all of a sudden, you're being eaten by an bear.  And when the ranger comes in to tranq Yogi, he won't be able to find him anywhere, because he's invisible.... and he's right... BEHIND YOU!  Sorry Mr. Ranger, you can thank science for making invisibility possible, and now the tech's in the hands of bears.  Kiss your quiet days goodbye and huddle in a corner with your shotgun in fear.

And just so nobody thinks I'm making this up, here's the video that was posted to show the easy "on and off" switching of making these nano things invisible.  And no, it doesn't have to be in water.  They say it works best in water, but it works on land too.