The title is an acronym for describing certain ex-CIA agents as "Retired and Extremely Dangerous."
Quite a lot of big names in this cast including Bruce Willis, Mary-Louse Parker, Morgan Freeman, John Malkovich, Brian Cox, Helen Mirren, Richard Dreyfuss, and Ernest Borgnine.
Basically a bunch of older, retired agents get together to save themselves and expose corruption within the government. You don't have to invest much in this film as it's not required. Partly fun and partly tedious.
It is worth it though just to see Helen Mirren fire a machine gun with such aplomb.
