Where there's smoke ...

The poor F train is taking quite a beating. This morning's F run was spotty with my train taking the 8th Avenue route due to congestion stemming from an early morning Herald Square derailment, but you already knew that.

This afternoon, however, my intrepid friend Lawrence Scaduto snapped these photos of what appears to be smoke coming out of the subway grates at 6th Avenue and 18th Street.