While at an airshow I had the chance to see these three planes fly in a very tight formation. They had to fly the top speed of the slowest plane, so in a bit of showmanship they had a build up to this formation. First the big jet (ok, I forget what they are!) flew by at a very high rate of speed, then circled around, join the second jet and flew much slower, and then finally they both circled and joined the older plane. It was quite impressive to see the big fast jet slow right down and fight to actually fly slow enough to stay in formation!