Three premieres, in three cities, on only one day. Tom Cruise and Emily Blunt are pushing limits to promote their latest movie, “Edge of Tomorrow.” Blunt says it is typical of her co-star: “When I heard about the premiere idea of three in one day I just said, ‘that’s Tom’s idea.'” Cruise laughs, saying the 31-year-old actress from “The Devil Wears Prada” will be unconscious anyway because she’s not getting much sleep with her baby daughter.