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Argo, an upcoming action film directed by and starring Ben Affleck, is filming in D.C. today and tomorrow and will move to the Northern Virginia suburbs later this week. The movie, Affleck’s third as director, takes place in the earliest days of the Iran hostage crisis when a CIA team successfully extracted six Americans from their Revolutionary Guard captors at the U.S. Embassy in Tehran using the cover of a science-fiction film called Argo. The new film, which is slated to be released by Warner Bros. in September 2012, is based on a 2007 Wired article recounting the escapade.

The film office also has up a casting alert for extras who can provide a “’70s look.”

Affleck’s last directorial effort, last year’s bank robbery thriller The Town, was admired for its gripping, sometimes breathless action sequences, but suffered under a soapy plot. Hopefully, the spycraft in Argo will avoid that and hew closer to the lean intensity of Affleck’s wonderful first film as director, Gone Baby Gone. At the very least, Argo will be a departure from the Boston noir of Affleck’s first two efforts.