We want to stick our heads in the sand when it comes to Varroa, but it really is something we should know more about. The worst part of varroa is the better your bees do, the better varroa does as well.
Let's take a look at the Su-57 right now. Here is the Su-57 with the 101KS-V IRST. The Su-57 is the only 5th generation aircraft among the F-22, F-35, and J-20 to use a conventional IRST, it is placed on the same exact spot on the Su-57 where the OLS-30 is fitted on the Su-30MKI.