After picking up passengers for the 11:00am Missionary Ridge local run, Southern 4501 shoves back onto the wye before leading the three cars back west. And yes, the whistle startled me as it's loud and I wasn't expecting them to move without manually throwing the switch. I think they newly installed a signal there.
Filmed at the Tennessee Valley Railroad Museum in Chattanooga, TN.
Southern 4501- 2-8-2 Ms Class "Mikado"
