Chris Plante at WMAL Radio in Washington reported on his show Tuesday that President Obama joined a cast of 61 "noted lawmakers, politicians, news anchors and celebrities, including every living President, in reciting the Gettysburg Address" for PBS star Ken Burns, who made "The Civil War" documentary series.

Everyone else delivered the address as Lincoln had written it, including the phrase, "that this nation, under God, shall have a new birth of freedom." But in his version of the address, President Obama omitted the words "under God." (Video below, at about 1:35.) Will the networks notice this gaffe?

One commenter on Plante's Facebook page quipped: "I think he didn't know...it must have been his WH staff's fault. Obama just now found out about his omission from the media reports. (sarcasm)..."