waves at the frequencies used. Careful attention has been paid to the alignment of many panel boundaries and edges, to direct reflected waves away from the aircraft in uniformly narrow angles. While the F/A-18E/F is not a stealth fighter like the F-22, it does have a frontal radar cross-section an order of magnitude smaller than prior generation fighters. Additional changes for reducing RCS can be installed on an as-needed basis. Avionics Initially, the Super Hornet's avionics and software had a 90% commonality with that of the F/A-18C/D fleet at the time. Differences include an up-front touchscreen control display; a large multipurpose color liquid-crystal display; and a fuel display. The Super Hornet has a quadruplex digital fly-by-wire system, as well as a digital flight-control system that detects and corrects for battle damage. Initial production models used the APG-73 radar, later replaced by the AN/APG-79 active electronically scanned array (AESA). The AN/ASQ-228 ATFLIR (Advanced Targeting Forward Looking InfraRed), is the main electro-optical sensor and laser designator pod for the Super Hornet. The communications equipment consist of an AN/ARC-210 VHF/UHF radio and a MIDS-JTRS low volume terminal for HAVE QUICK, SINCGARS and Link 16 connectivity. The defensive countermeasures of Block I aircraft includes the AN/ALR-67(V)3 radar warning receiver, the AN/ALE-47 countermeasures dispenser, the AN/ALE-50 towed decoy and the AN/ALQ-165 Airborne Self-Protect Jammer (ASPJ). Block II aircraft replace the ALQ-165 with the AN/ALQ-214 Integrated Defensive Countermeasures (IDECM) system, consisting of internally mounted threat receivers and optional self-protection jammers. Interior and exterior lighting on the Block II was changed to allow the use of night vision devices. The older ALE-50 decoys are being replaced by ALE-55 towed decoys, which can transmit jamming signals based on data received from the IDECM. The improved AN/ALQ-214 jammer was added on Block II aircraft. Block II aircraft were fitted with the AN/APG-79 AESA radar, capable of executing simultaneous air-to-air and air-to-ground attacks, and providing higher quality high-resolution ground mapping at long standoff ranges. The AESA radar can also detect smaller targets, such as inbound missiles and can track air targets beyond the range of the aircraft's air-to-air missiles. VFA-213, the first squadron to fly AESA-equipped Super Hornets, became "safe for flight" (independently fly and maintain the F/A-18F) on 27 October 2006. The first Super Hornet upgraded with the Joint Helmet Mounted Cueing System (JHMCS) was delivered to VFA-213 on 18 May 2007. The JHMCS provides multi-purpose situational awareness, which