The air force one with the big dish on the top used for reconaissance.
Nine answers:
anonymous
2007-11-04 12:49:32 UTC
The E-3 Airborne Warning and Control System (AWACS).
Kostagh
2007-11-04 12:55:03 UTC
The name (an acronym - that is) is AWACS - Airborne Warning and Control System - the saucer is actually a large radar antenna. The USAF currently employs to such duties modified Boeing 707 aircrafts. Japanese Air Force uses a modified Boeing 767. Various armies around the globe use different systems. The Russian version is probably the largest. They are using a modified version of their huge IL-76 airlifter, named Beriev A-50. Around the world aircrafts such as Gulfstream, Embraer or Boeing-737 are used.
anonymous
2007-11-05 03:15:15 UTC
E-3 Century is the Airforce airborne warning and control plane
and the E-2 Hawkeye is the navy and the Russians use a variant of the IL-76.