CN locomotive 7027 sorts cars in Aldershot yard. My experience went like this: Myself and a non-explorer friend go take some train shots, and we decide to see if we can get a little closer to the action. One CN worker walks past us showing no concern, but on his radio we heard the engineer say "tell those guys they're trespassing. The cops are on the way."
His response to the engineer was "that's not my fucking job!"