Flying overhead in a Cessna aircraft, the Justice Department may very well be sending a cellphone dragnet over your city right now. This plane will use an amplified cell signal that'll override the next-most powerful signal in your area, tapping in to your phone's automatic aim to connect to the best signal in range. With this connection, the U.S. Marshals Service will summon registration data for the lot of the phones it's located, aiming to ping a single phone in the process. All other phone data is said to be dropped. But there's more to this equation than simple information gathering.