They have those outdoors.

By July 4, 2011 10:18 am ET

DENVER, CO – JULY 1: Fireworks explode over the stadium after a game between the Kansas City Royals and Colorado Rockies at Coors Field on July 1, 2011 in Denver, Colorado. The Rockies defeated the Royals 9-0. (Photo by Justin Edmonds/Getty Images)