context: In the early 1950s, a four-man squad of unorthodox Los Angeles Police Department detectives begins throwing its weight around by tossing Jack Flynn (William L. Petersen), an organized crime figure from Chicago, off a cliff on Mulholland Drive, nicknamed "Mulholland Falls" for all the men they have thrown off it.
  Detective Lieutenant Maxwell Hoover (Nick Nolte) and his partners Coolidge (Chazz Palminteri), Hall (Michael Madsen), and Relyea (Chris Penn) are called to investigate a suspicious death of a young woman found at a construction site. The evidence shows that every bone in her body is broken. A coroner deduces that she looks like she "jumped off a cliff," although there are no cliffs nearby. The woman turns out to be someone Hoover knew very well, Allison Pond (Jennifer Connelly).
  The detectives receive a film of Allison having sex in a motel room, taken by a secretly hidden camera behind a two-way mirror. Allison's gay friend Jimmy Fields (Andrew McCarthy) admits to making this film and more, including one with Hoover in it. Fields is murdered while being guarded by Hall and Relyea.
  Radioactive glass is found in Allison's foot, which leads the detectives to the Nevada Atomic Testing Site, where they illegally break in and investigate. Colonel Fitzgerald (Treat Williams) threatens to lock up the police officers, warning them that they have no authority here. The man in the film with Allison proves to be the civilian commander of the secret base, retired General Thomas Timms (John Malkovich), now head of the Atomic Energy Commission, who admits the affair to Hoover but has an alibi for the day of her death.
  Max's marriage to Kate (Melanie Griffith) is jeopardized by someone desperate to retrieve the film. An FBI agent (Daniel Baldwin) fails to persuade the LAPD's Chief (Bruce Dern) to drop the case, so Lt. Hoover's house is ransacked by FBI men with a search warrant, but no film is found. Hoover brutally assaults the FBI agent, after which a film is delivered to Kate showing her husband and Allison having sex in the motel.
  The blackmailer turns out to be Colonel Fitzgerald, who demands the film of Timms with Allison be brought to him. Hoover realizes that Jimmy Fields' film footage of Allison also includes images of "atomic soldiers" used as guinea pigs for A-bomb tests, now dying in a secret hospital ward on Timms' military base. Hoover and partner Ellery Coolidge fly to the base, where Max brings the film to Timms, who is terminally ill with cancer himself.
  For their return trip to Los Angeles, Max and Coolidge board a C-47 cargo airplane, where they are joined by Colonel Fitzgerald and his aide (Kyle Chandler). During the flight, Max realizes that Fitzgerald is going to kill them by throwing them off the airplane in mid-air, the same way that Allison Pond died. In a vicious struggle, the detectives fight for their lives. Coolidge charges the aide as gunshots go off. Coolidge and Max are able to throw the aide and Fitzgerald out of the plane, both falling to their death. The pilot is also accidentally shot but manages to crash land before he dies. Coolidge celebrates the safe landing until realizing that he, too, has been shot, also dying at the scene.
  Max cannot reconcile with his wife at Coolidge's funeral because she feels betrayed and heartbroken. At the cemetery, where he explains that his unit has been disbanded, she walks out on Max for good.
question: When did it take place?
answer: Early 1950s