Actress and stuntwoman Kelly Greyson is opening up about her time working with Bruce Willis, who she champions for his authenticity and professionalism on and off film sets. Greyson last filmed with Willis a little over a year ago for "Fortress: Sniper's Eye," the second installment of "Fortress." Jesse Metcalfe and Chad Michael Murray also star in the action-packed flick. In an interview with Fox News Digital, Greyson said she was unaware of Willis' aphasia diagnosis at the time she worked with him, but believes his retirement from acting should remind everyone of the incredible legacy he's built.