In a few occasions now I have as a CV tried chase after torpedobombers and bombers that are returning back to their carrier after a strike, and for a short while (5-10 sec) they seem to have gained a speed boost flying a lot faster than my chasing fighters, and then return back to their normal slow speed. Is it a button for this that I am not aware of, an ability of some sort that I am not aware of. Or is it simply a bug or in my mind that this is happening?