Hope some people will find this interesting - it's the first time I've seen formation flying on the network. I guess that these are two pairs of Pilatus PC-21's - nothing in the database about them, though. (Click on the pictures, then you can use left and right arrow keys to scroll left and right).
All shots taken today - time underneath each picture (cropped to save space)
12:56
12:57
12:58
12:59
13:00
13:02
Rod