Subsonic Reason #1 for landing lights. Fairchild AFB (Spokane, WA) has a fog dispersal machine, creates snog by injecting propane into the fog/light snow. But opens up the runway. We would hold at 35,000' and simply wait our turn.
Many times simply "feel' for the runway, BUFFs don't divert--people don't like us at their base unannounced back in the day.