F-35 Cancelled, then what ?

[ORAC]

Reference IR detection.....

How the Navy's New Block III Super Hornet Could Crush China's J-20 or Russia's Su-57 | The National Interest Blog

Sounds good against a single target, it as soon as you get multiple targets with the same signature you get multiple false locations. Vague relocation that the old UKADGE passive radar detection system had all sorts of ways to eliminate them (for electronic jammers, not IR) using hyperbolic lays etc - but there were always dozens of them when it was exercised.