"Prep & Landing: The Snowball Protocol" is the third half-hour special in the beloved, Emmy-winning animated franchise. It premieres Thursday Nov. 27 at 7pm on Disney Channel, Friday Nov. 28 on Disney+, and Sunday Nov. 30 at 9pm on ABC. Executive Producers Kevin Deters and Stevie Wermers-Skelton discuss the lasting impact of "P&L", including this new adventure.