If it where arch, but its manjaro. Somehow during the last kernel update the grub info was not changed to point to the current kernel names…still pointed at the old kernel…and that had been replaced. After figuring all that out in chroot, fix was as simple as changing a single line in that grub file

IR homing sensors before the digital age where a piece of analog signalpath art. Its mostly rotating a singular ir sensor in 45degree and then mapping the inputs rotation compensated to the control surfaces. Simple at core but cant tell the difference between a jet exhaust, the sun, or a flare.

Modern version are boring is a High resolution ir cam and some blackmagic AI picking targets apart from flares.

source for the information in the title: i made it up, or did i?