This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
StallFormation. Stall formation Original source brooks af mil Image modified beyond that to include elements from centennialofflight gov htm soton ac uk centennialofflight gov and discussions at en Talk Stall flight Source photoshop layers are available org psd here Font used is Ariel bold px User Interiot on org