Back in March when MEC 507 and 516 led a very rare daytime run of CSX L055. 507 is the only active Guilford survivor left anywhere, and seeing it run with an increasingly rare Pan Am Railways unit in 2026 - 3 years after Pan Am went defunct, and 20 years after the Guilford name was disused - was quite the sight to see. Probably one of my favorite catches of all time.