Everyone has a part to play in this special edition of American Theatre, for which we’ve expanded our monthly Role Call feature to offer profiles of 20 theatre workers from all over the U.S. doing as many different things in as many different kinds of theatres as possible. Though we’ve assigned each person here a single “role,”  you’ll quickly find that what makes them good at what they do is a breadth of experience, not a narrow focus on a single field or task. It’s safe to say that all are as defined by their ambitions and dreams as they are by the daily challenges of making theatre, and they bring both a big-picture sense of their art form and an attention to the nitty-gritty details of their respective stage practices. We’ve been gratified to meet them, in short, and we’re proud to introduce them to you.