A book cart drill team refers to a group of library employees (typically librarians and library technicians) who perform in public choreographed routines with wheeled carts. Participants generally aim to demonstrate esprit de corps and/or precision of movement. Teams exist throughout the United States, including Colorado, Connecticut, Delaware, Florida, Illinois, Massachusetts, Ohio, Pennsylvania, and Texas. Since 2004 the "Library Book Cart Drill Team Championship" has taken place during the annual conference of the American Library Association.