[taxcontrol]

They are in the Lake Meed National Recreation area which encompasses the area which Bundy’s cattle is grazing upon.
Specifically “dock-yards” and “other needful buildings”:

http://www.nps.gov/lake/planyourvisit/marinas.htm
http://www.nps.gov/lake/planyourvisit/visitorcenters.htm

[TigersEye]

A dock yard at Lake Mead? LOL

That's what I figured, nonsensical sophistry.