Moises, a Chick-fil-A cashier, surprised a 4-year-old who's deaf by using ASL to communicate — prompting Luca to sign his name for the first time.

Colts cheerleader Morgan McLain minored in ASL in college and learned how to sign from her professors who were deaf.

"Learning ASL was important so that our future family could grow up connected, inclusive, and understood," Zachary tells PEOPLE Films by Ry | @filmsbyry Zachary Swain spent months secretly learning ...