I want to take up on that with regard to drones. Sorry, I've been in and out of the room. I've been dealing with a couple of things, domestic things, so I apologize for missing some of your testimony. I don't like to do that, but I have.
I'd like to go into the agricultural sector with the robots. I was really curious about what you were saying. How sophisticated can they get and then how quickly can they get into the market and still be useful? What would their life cycle be like in terms of before they get supplanted or would that happen?