Leased RDG power waits for a signal. The double headed power is just a few hundred yards back from the lone T1> shot earlier, probably standing almost next to Lyco Jct with the Elmira branch. Thanks to Michael Bobb for that info.
Either a freight train being helped over a steep grade or a long passenger or freight train requiring more engines. This album includes Helpers and double heading trains of the old days both steam and diesel.