CP 1415 at Orth

On my way between job sites, I heard the Canal Job talking about switching at Orth — now actually known as H.C. Brill.  With a little patience, I was able to catch the bright red engine between a couple cars.  Does anybody know what those towers are for — the yellow, tan, and brown ones — some kind of safety harness system for workers opening up the hatches on the cars, perhaps?  Mark W. Hintz photo, 08/08/08, Oak Creek WI