 In support of air-to-ground operations, the E-3 can provide direct information needed for interdiction, reconnaissance, airlift, and close-air support for friendly ground forces.The unpressurized rotodome is in diameter, thick at the center, and is held above the fuselage by 2 struts.It is tilted down at the front to reduce its aerodynamic drag, which lessens its detrimental effect on take-offs and endurance (which is corrected electronically by both the radar and secondary surveillance radar antenna phase shifters).