Military over Anstruther

Some folks on Anstruther may have noticed and spoken of planes flying over Anstruther, and rather low at that.  This happened in mid July at around 9pm when an exceptionally loud plane flew very low over the lake, so low it looked like it would land in the water and was immediately followed by another.  

It happened again last week.  Noticing the army green colour of the plane, it was clear that it was  a military plane.  Anstruther is apparently under the airspace of a military training zone.