Take another look @ 'Black Widow' fight scenes from "Captain America: Civil War", plus new animated story-board footage featuring 'Natasha Romanoff' and 'Steve Rogers', not used in the final cut of the film:
"...from illustrator Darrin Denlinger, the 'small animatic beat' was produced for the 'Airport Battle' in 'Captain America: Civil War'...
"...edited and sound designed by Coral D'Alessandro'..."