Desperate for Air Defense, Ukraine Pushes U.S. for 'Franken' WeaponsTo meet the demand, the U.S. is producing so-called FrankenSAM systems that marry advanced Western weaponry with Soviet-era items still in Ukrainian stockpiles.
Source: Desperate for Air Defense, Ukraine Pushes U.S. for 'Franken' Weapons (https://www.nytimes.com/2023/10/28/us/politics/air-defense-ukraine-frankensam.html)