Did I see a RW&B GP38 last night on the Port Jefferson line?

Was coming up on Mill Pond Rd. crossing in St. James after 6pm last night. It was dark and was too far away from the crossing but I saw this paint scheme fly by! What did I see?! Thanks

No.

There was a CE move going through St James around 130am with engines 409/171, but nothing else outside of the regular schedule on 12/4.