Mil aviation for a change.
The capability to adapt is the most astonishing feat of Ukrainian military. They've received all sorts of kits from around the world from 1960's AA guns to AGM-88's, from Gepards to HIMARS. They just adapt themselves and adapt the different technologies into their existing systems and make everything work seamlessly. Astonishing, really.
They have no issues using old soviet stuff like here on su-25 and at the same time they have western goods hanging from Migs.