I hate how there is always a dirtbag of some sort lurking within hobbyist communities, this happens every now & then in car clubs, the one I'm a member of recently had a story about how a trailer along with the race car that was in it was picked up at night during a big event.
I would start looking at CL & Ebay for sellers that have listings with the same group of items as the ones stolen, I hope it gets found & the guilty party punished.