display. In 2011, Boeing received a US Navy contract to develop a new mission computer. In 2007, Boeing stated that a passive Infrared Search and Track (IRST) sensor would be an available future option. The sensor, mounted in a modified centerline fuel tank, detects long wave IR emissions to spot and track targets such as aircraft; combat using the IRST and AIM-9X Sidewinder missiles is immune to radar jamming. In May 2009, Lockheed Martin announced its selection by Boeing for the IRST's technology development phase, and a contract followed in November 2011. , a basic IRST would be fielded in 2016 and a longer-range version in 2019; sequestration cuts in 2013 could cause two years of delays. An F/A-18F performed a flight equipped with the IRST system in February 2014, and Milestone C approval authorizing low-rate initial production (LRIP) was granted in December 2014. Advanced Super Hornet and planned end of production Boeing and Northrop Grumman self-funded a prototype of the Advanced Super Hornet. The prototype features a 50% reduction in frontal radar cross-section (RCS), conformal fuel tanks (CFT), and an enclosed weapons pod. Features could also be integrated onto the EA-18G Growler: using CFTs on the EA-18G fleet was speculated as useful for relieving underwing space and lowering the drag margin for the Next Generation Jammer. Flight tests of the Advanced Super Hornet began on 5 August 2013 and continued for three weeks, testing the performance of CFTs, the enclosed weapons pod (EWP), and signature enhancements. The U.S. Navy was reportedly pleased with the Advanced Super Hornet's flight test results, and hopes it will provide future procurement options. In 2013, the U.S. Navy was considering the widespread adoption of CFTs, which would allow the Super Hornet to carry of additional fuel. Budgetary pressures from the F-35C Lightning II and Pacific region operations were cited as reasons supporting the use of CFTs. Flight testing demonstrated CFTs could slightly reduce drag while expanding the combat range by . The prototype CFT weighed , while production CFTs are expected to weigh . Boeing stated that the CFTs do not add any cruise drag but acknowledged a negative impact imposed on transonic acceleration due to increased wave drag. General Electric's enhanced performance engine (EPE), increasing the F414-GE-400's power output from of thrust per engine, was suggested as a mitigating measure. In 2021, the U.S. Navy halted plans to fit CFTs as standard on