The lights dim, as a local gym’s newest squad takes the floor to show off their newly acquired tumbling skills, jumps and stunts. An MC introduces the group as AC/DC’s “Back in Black” begins to rail from the auditorium speakers. A crowd of teenage athletes holds up signs and begins to cheer wildly for individual members of the squad. Someone proudly yells out, “That’s my mom!” and a team of parent cheerleaders begins to perform.