Martin Sheen is seen drinking out of a University of Dayton Flyers coffee mug. Sheen grew up in Dayton, Ohio. He has said that he failed his entrance exam there so he could pursue acting. He likes to give shout outs to his hometown from time to time.
The title of this episode, "What Kind of Day Has It Been?" is also uttered by Leo in the episode "Commencement."
Goof: You clearly see a secret service agent grab CJ and push her down in one shot. As they cut away to the next shot, you see Sam taking her down, not the secret service agent.
CJ's fish bowl decoration: The Space Shuttle, (one of the subplots of the episode is a problem on the shuttle mission Toby's brother is on)
The departure of Mandy Hampton after this episode is never really explained.
Jed and Fitz discuss how the eagle in the great seal faces the arrows during times of war, which conflicts with Truman's 1945 Executive Order 9646 that the eagle must always face the olive branch.
The assassins load their guns while standing in the window frame, backlit by a bright red light; they are clearly visible from the street, and from other buildings, yet neither the agents on the ground, the sharpshooters on the roofs, nor the agents in the helicopter notice.
CJ's Fish bowl decoration is a telephone.
Goof: Since Mandy's memo is a work product of her contract with Russell, it would be owned by him, and therefore she could not legally show it to the Bartlet administration. (She could, however, create a new memo for them which said essentially the same thing.)
Goof: Sam says that he got the weather update from a Coast Guard First Lieutentant, but there is no such rank. The Coast Guard follows Navy ranks which would be either a Lieutenant or a Lieutenant Junior Grade.
Goof: The Andrew Johnson fireplace in "Mural Room" - (room with the big fireplace and the painted walls) is lid in the scene with Josh and Donna while in season 02 episode 11 "Leadership Breakfast" opening scene it has been welled shut since 1896.
Sam's middle name is Norman.
In this episode Jorja Fox appears as Zoey's Secret Service agent, although her name is mispelled on the credits she is listed as Jorjan Fox.
Marlee Matlin (Joey Lucas) and Elizabeth Moss (Zoey Bartlet) have guest starred in many of ths same series. The have both had recurring roles on, of course, The West Wing, and Picket Fences. They have even appeared on Law & Order, albeit on seperate series of the francise (Matlin on Law & Order: Special Victims Unit and Moss on Law & Order: Trial By Jury). What's most interesting is that with the frequent recurrence in these roles they have never shared a scene on The West Wing or in Picket Fences. Take this episode for example in which they both appear but not together.
When Donna and Josh are checking in to the hotel, Josh has trouble opening his door with his key card. Years later, in the episode "King Corn", after they have both left the White House, they are checking in to rooms that are across from each other and as he is having trouble with his key card yet again, she comes over and helps him.
While Josh is talking to Joey Lucas with Kenny, Kenny says what Joey is signing a few signs before she even signed the word he said.
As the President boards Air Force One, the entire port wing is visible, including the six-foot vertical winglet at the end. The plane commonly used as Air Force One is one of two modified Boeing 747-200s; Boeing didn't add the winglet until the 747-400 model.
This is the first episode of the series to contain flashbacks.
Bartlet: Why is [the execution] my problem at all?
Leo: As opposed to who?
Bartlet: The Governor of Michigan.
Leo: Oh, you mean why isn't it a state crime? It was prosecuted by the US Attorney under the Drug Kingpin Law...
It's a good thing the Federal statutes on executions are being argued in this episode--because in Michigan (the state in which Simon Cruz was apparently tried) the death penalty is not an option. The strongest term one can serve in Michigan is life imprisonment.
The small pocket bible Father Cavanaugh uses is the same one Karl Malden used in the movie, On the Waterfront, in which he also portrayed a priest.