Last week, we asked you what this tool was for. It's a radial engine starter-generator mounting nut removal tool. This specialized wrench is designed to remove or install the mounting nut that secures a starter-generator to a radial aircraft engine, typically found on older warbirds or vintage aircraft with engines like the Pratt & Whitney R-1830. You don’t see these often, they’re like gold when one turns up. Most of the old-school, third-generation mechanics still have theirs, passed down from previous generations. (fb)

On today's date in 1991, the German Air Force officially retired the F-104 Starfighter, concluding almost 30 years of active duty. No other country operated more of these aircraft than West Germany, which flew 915 of the 2,578 Starfighters produced worldwide. They primarily operated the two-seat F-104F and the F-104G strike variant. Do you know what the German nickname for the F-104 was? (fb)