Unmanned and armed helicopter
Defense Tech reports on experimental arming of a small (7' long by 2' high) helicopter that's being marketed for, among other things, convoy escort. (It has a radio control range of about 1.5 miles). Originally designed for recon, they're now outfitting it with a full auto shotgun that can fire anything from birdshot to high explosives. I want one, but since the price tag is a million, I may have to wait a while.