>> it looks more or less like a small bird that can fly through small clearings and trees and see inside. >> matt keennon says this is how the bird sees us, from above. right now the humming bird can fly loa little longer than ten minutes. at that size, imagine what it could do in ten hours. the defense department spent $4 million with that dream in mind. american troops armed with an unmanned vehicle that blends into the other birds or insects in a given country country. >> it hovers around until it finds an opening. but most still depend on command to control their movements. >> that's a vulnerability. that can be interrupted. that can be hacked. >> he said the future enemies will cut the connection.