The summer stock season for the Averitt Center for the Arts opens Thursday night with the satirical play “Red, White, and Tuna.” Performances are set for 7:30 p.m. Thursday, Friday and Saturday at the Whitaker Black Box Theater on West Main Street. The summer stock season is all about creating great performances in a short period of time, said director Olivia Carter, who is the assistant technical director and set designer of the Averitt Center for the summer season.