If he comes closer, I can kill him with a $0.50 round from my $400 rifle, instead of a $60K munition from a $50 million drone. It's called cost effectiveness. But being a liberal statist, you wouldn't understand spending tax dollars wisely, right? Are you seriously that afraid? Did you cr_p your pants during the Cold War when we had the whole Red Army on the other side of the Fulda Gap?