My brief return to the Norfolk Southern Greenville District paid off with this northbound 172 coming out of Birmingham AL. with a brand new Burlington Northern Santa Fe Tier 4 ET44C4 in the lead.
This is only my third Tier 4 unit I've seen and only the second one I've gotten on film.
Here we see the train racing through a clear signal at Oakwood GA on it's way to Linwood NC
Enjoy!