Warning: Shia LaBeouf and Jai Courtney have guns, and they aren't afraid to use them.

As two U.S. marines on a mission in post-apocalyptic America, the "Transformers" star and his cohort threaten a hapless man (Clifton Collins Jr.) in this new still from "Man Down," a psychological thriller from director Dito Montiel ("A Guide to Recognizing Your Saints") that also stars Gary Oldman and Kate Mara. Below the photo you can check out a full synopsis for the film, which is currently shooting on location in Louisiana.

A photo from Man Down starring Shia LaBeouf and Jai Courtney
Photo credit: Cook Allender

In a savage post-apocalyptic America, U.S. Marine GABRIEL DRUMMER (La Beouf), searches desperately for the whereabouts of his estranged son, JONATHAN and wife, NATALIE (Mara). Accompanied by his best friend DEVIN ROBERTS (Courtney), a hardnosed marine whose natural instinct is to shoot first and ask questions later, the two intercept CHARLES (Clifton Collins Jr.), an apocalyptic survivor carrying vital information about the whereabouts of Gabriel’s family. As we revisit the past, we are guided in unraveling the puzzle of Gabriel's experience and what will eventually lead us to? the origin of this war torn America.?

A former contributor to sites including MTV's The Backlot and Bloody-Disgusting, Chris Eggertsen worked in film development before indulging his love of pop culture writing full time. He specializes in horror, the intersection of social issues and entertainment and Howard Stern. He's on Twitter @HitFixChris.