I could easily have missed this, but my friend messaged me that a Herc was coming in.  I was working on some other stuff and would have been unaware until too late.  It was not where I was, and I wasn’t moving but the roll out and taxiing back was in lovely light so I wasn’t missing out.  They taxied to the terminal and kept the engines running so I wondered if they were going straight back out but it wasn’t to be.  They then taxied to a parking spot and shut down.  Maybe they were clearing customs?  Apparently they stayed for the night but were gone when I came by the following day.