From May 3-5, 2019, Rock Island Auction Company (RIAC) will be offering for bid spectacular firearms and rare collectibles, but not just that: among the items to be auctioned off, a Soviet MiG-21 supersonic jet fighter, a U.S. M47 Patton main battle tank, and a WW2 U.S. M8 Greyhound armored car. The list is huge and impressive: here are some highlights.