They are the U.S. Marshals. They are most likely acting on a federal court order that says words to the effect of, "Auction this stuff." They sell vehicles, boa

They are the U.S. Marshals. They are most likely acting on a federal court order that says words to the effect of, "Auction this stuff." They sell vehicles, boats, buildings, anything that can be seized by the government. Auctions are the only method I've ever seen them use, I think because that allows the public to bid and avoids conflicts of interest (e.g., an agent's brother-in-law gets first crack at whatever they're selling).