In the summer of 1991 the Railroaders Memorial Museum had the Horseshoe Curve visitors site closed for renovations and installation of the funicular. Dad and I didn't know this so we were pretty disappointed when we showed up on the evening of July 31. We decided to poke around a bit anyway so we went through the tunnel and parked about 1/4 mile away out of sight on the old siding alignment and walked in to the backside of the curve. At about 7:30 PM a loaded slab train came pounding up the hill from Altoona, but something didn't look right. It turns out that the lead truck of the first gon was on the ground shooting sparks and popping out pandrol clips. We were able to flag down the helpers and they got the train stopped short of MG Tower, where it would have torn up the plant pretty good. The scanner chatter verifies what happened. That's my dad hustling up to the helper crew to tell them what happened. The rear end crew was pretty grateful and gave dad and I the nickel tour of the helpers. Later after we hiked in to MG the brass hats not only let us stick around, they treated us to some spring water in MG Tower! By then it was too dark to get video of the set out gon, but the wheels of the lead truck didn't have any flanges left on them. Note that in my exuberance I misidentified the SD50's on the head end as SD60's in the video.