This 270 Million $ Plane Can Detect Enemy Planes up To 403 Miles Away Boeing E 3 Sentry in Action

The U.S. Air Force Boeing E-3 Sentry AWACS is derived from the Boeing 707 belongs to the airborne early warning and control plane category.

A airborne early warning and control (or AEW&C), is a system of radar stations mounted on planes that can monitor a vast air space and serve as command posts for air operations or anti-aircraft fight. This video also shows mid air-refueling performed by a Boeing KC-135 Stratotanker.