How are peregrines so fast?

Study on how the fastest animal on the planet dives at over 200 MPH on a regular basis:
http://blogs.plos.org/everyone/2014/03/01/falcon-physics-science-diving-peregrine-falcons/

Peregrine Falcon Restoration,

I've always loved Wild Kingdom:  https://www.youtube.com/watch?v=kju3Pz3R9D8#t=28