Standing in for Camp David in this episode is ThorpeWood, an environmental education center located on a 110-acre nature preserve nestled in a secluded, heavily forested stream valley 1,500 feet high on Maryland's Catoctin Mountains.
Birnam Wood is a location in Shakespeare's Macbeth.
Prime minister Zahavy's words about losing his right eye or hand before Jerusalem is probably based on the quote from Psalms: "If I forget Jerusalem I will forget my right (hand)".
Some interior scenes were shot at the Thorpewood Retreat Center, in the Catoctin Mountains near Thurmont, MD - the actual "Camp David."
A running gag amongst The West Wing is that senior staffers fly backwards when firing a gun. This happens to Toby when trying to shoot a shotgun, and CJ with a pistol in an earlier season.