Amtrak #974 Monster Train - 4/15/11

I missed a Union Pacific Autorack by 30 seconds but caught some interesting train at the end. at Burbank Airport station, Burbank, California on 4/15/1 1) Amtrak Pacific Surfliner with AMTK 457(10th Anniversary unit) 2) Amtrak Coast Starlight #14 (AMTK 161, 510, a PV on the rear) 3) Amtrak special train 974, AMTK 73, 74, 12, 75 and 24 cars! The PTC(Positive Train Control) test train.