Once considered for replacement by the "Common Support Aircraft", this concept was abandoned. The latest E-2 version is the "E-2D Advanced Hawkeye", which features an entirely new avionics suite including the new AN/APY-9 radar, radio suite, mission computer, integrated satellite communications, flight management system, improved T56-A-427A engines, a glass cockpit and later changes should enable aerial refueling by 2020. The APY-9 radar features an active electronically scanned array, which adds electronic scanning to the mechanical rotation of the radar in its radome. The E-2D includes provisions for the copilot to act as a "Tactical 4th Operator" (T4O), who can reconfigure his main cockpit display to show radar, IFF, Link 16 (JTIDS)/CEC and access all acquired data. The E-2D's first flight occurred on 3 August 2007. On 8 May 2009, an E-2D used its Cooperative Engagement Capability system to engage an overland cruise missile with a Standard Missile SM-6 fired from another platform in an integrated fire-control system test. These two systems will form the basis of the Naval Integrated Fire Control – Counter Air (NIFC-CA) when fielded in 2015; the USN is investigating adding other systems to the NIFC-CA network in the future.