In my opinion, with Bowers controlling the train flow leading into and atop the Triple Underpass, I believe that standard equipment inside his Railroad Tower probably included a pair of binoculars. It's gotta be a good 150-200 yards straight line to the middle/far end of the Triple Underpass. I do Not believe someone controlling train cars running atop that Underpass could/would do it with their naked eyes. Bowers was not asked about this by the WC Attorney. I believe that whatever Bowers detailed having seen, (including his descriptions of what was going on inside the 3 cars that cruised around his Railroad Tower), was at least partially aided by binoculars.