Ocean\'s 11 (1960)

Danny Ocean and his friend Jimmy Foster recruit their buddies to rob four of the biggest casinos in Las Vegas on New Year's Eve. The men are all known to one another and served in the Airborne during the war. The plan is to knock out the electricity supply to the city and for their electrical expert, Tony Bergdorf, to set the wiring so that the activation of the emergency generators would open the doors to all of the cashier's offices. The men take up jobs in the casinos - entertainers, waiters, busboys - and all goes well until Bergdorf has a heart attack just after the robbery. Not only does his death suggest to Jimmy Foster's soon to be father-in-law Duke Santos just who the robbers are, Danny and the men make an important mistake when they think they've found the perfect way to ship the money out of Las Vegas without getting caught.