Hi Nick, I was reading a mag a couple of years ago, which seamed to get hold of info on modern weapons, though I have not seen it for year now. But with your mention about the Mosquitoes, they were quoting the Russians as saying that now have tech to pick up the F35, works on displaced air similar to how subs can be hunted by water disturbance, plus they have considerable powered up their HF trackers for their SAM systems, so I suppose like most things, it goes in swings one day you have a killer the next an antidote is found and a new killer is found. Same as the Chinese have had for a while a 7.5 ton missile, which goes up into the outer atmosphere then dives at sonic plus speed at its target with a range of 1600 miles, apparently they happily admit it was designed as a Flat top killer.
Glad I am a O.A.P. now, just pity the young guys who have to confront these things for us, they have my total support and admiration.