– Aviation Week – The U.S. Navy expects to award contracts soon for a longer-range version of the AIM-9X Sidewinder, known as Block III. Not only will it be a major change to the AIM-9X—retaining only the seeker, optical target detector (laser fuze) and data link of the Block II weapon—but its development is starting before the Block II has finished operational tests…With these developments, the U.S. Navy is following the lead of other air arms—notably, the Royal Air Force—in investing in non-RF sensors and weapons that work far outside the within-visual-range envelope. One key technology is better processing that has greatly improved the performance of IRST.