The document discusses four potential locations for filming a thriller opening sequence. Location 1, a school field, was originally chosen but proved difficult to schedule filming. Location 2, Marriott's Way, was then selected as it had similar elements to the field but was publicly accessible. Location 3, a warehouse, was considered for its large dark space but local options could not be accessed. Location 4, a group member's garage, was ultimately chosen as it allowed for close-ups and interaction between characters while being conveniently accessible for filming.