The E-3 Sentry is an airborne warning and control system (AWACS) aircraft developed by Boeing. It is designed to provide surveillance, command, and control for military operations. Equipped with a large radar dome on top, the E-3 can detect and track aircraft and other targets over vast distances, making it a crucial asset for air defense. The E-3 Sentry is based on the Boeing 707 airliner and can operate in various weather conditions. It is primarily used by the United States Air Force and has been deployed in numerous conflicts to enhance situational awareness and coordinate air operations effectively.