mr. calabresi, before i race off, let me just get some clarification. i, along with the chairman and senator coats, i've had the privilege of serving with them on the intelligence committee in the past, and we have been very hindful of -- mindful of protections of privacy with what we've been going through in trying to protect the nation's national security interests. now, let's say you are a divorce lawyer and you are representing a client and you want to follow the spouse. so you can hire a private detective. that doesn't take any kind of court order. how do you see the difference of the privacy invasions of employing the services of a drone to follow the suspect spouse? >> it's a great question, senator. i mean, i think that that goes to the fundamental issue of drones which is to say that they're cheaper, and they're smaller, and they're easier to use. so whereby the private investigator might cost you hundreds or thousands of dollars to do this, a drone may be able to do it for tens or hundreds of dollars. so talking about much greater privacy inva