During the Abbotsford Air Show, we could see a bunch of people out on the airfield.  It wasn’t obvious what they were doing but I took some shots with the longest lens I had to see if I might later work out what was going in.  My friend Mark thought it might be related to the drone display that was due to take place after dark.  I think he might have been right.  Looking at the shots, they seem to be waving the drones around above themselves.  Maybe this is part of a calibration routine or something to do with activating them and having them communicate.  I don’t know.  If anyone is familiar with all of this, please do let me know in the comments.