LOS ANGELES (AP) — The stakes may be high for Ethan Hunt and his team in "Mission: Impossible - Rogue Nation," but it was hardly impossible for the Tom Cruise pic to conquer the box office. The fifth installment in the nearly 20-year-old film series has earned $56 million, according to studio estimates Sunday. It's the second-highest opening for a "Mission" film since "Mission Impossible II" took in $57 million over Memorial Day weekend in 2000. The Paramount and Skydance Productions film cost a reported $150 million to produce and should have no problem making up its budget, especially with overseas earnings. Meanwhile, Warner Bros.' "Vacation" has gone off track.