How does the US airborne command centre E-3 Sentry control air wars?

America's E-3 Sentry Airborne Warning and Control System was reportedly damaged after an Iranian missile struck Prince Sultan Air Base in Saudi Arabia. E-3 Sentry monitors and controls air wars. Built on a modified Boeing 707 platform, the aircraft is equipped with a large rotating radar dome, allowing it to monitor airspace over a radius of over 250 miles.