President Bartlet (Martin Sheen) goes over to the crowd to "work the rope line" and shake hands. Normally, there would be Secret Service agents surrounding him, including one right behind him literally holding onto the president's belt. That is known as the "body man," and his job is to make sure the president isn't pulled into the crowd. However, there weren't any agents around him at all, including a "body man."
When Donna (Janel Moloney) is in the airport trying to find Senator Hardin, an announcement comes over the intercom announcing "Delta flight 378" from Atlanta. Delta flight 378 from Atlanta lands in Nassau, not Washington D.C. Similarly, Donna states that the district office said Senator Hardin was on Delta 15. Delta flight 15 runs from Atlanta to Salt Lake City.
Charlie Young calls the Pentagon on the phone and asks for "Sergeant Major Moreland." He is transferred to several offices, but to each subsequent person he asks for "Sergeant Moreland." Sergeant Major is the top enlisted rank in the Army and Marine Corps, and people who hold that rank are always addressed as "Sergeant Major," not "Sergeant." Charlie Young would deal with military personnel on a regular basis, and mentioned that he knew that Sergeant Major personally, as he played basketball with him. He would know the proper form of address.
Toby tells Senator Hoebuck that CJ got "spammed" with a remote prayer "a few months ago." The remote prayer was actually at the beginning of President Bartlet's first term, which was nearly four years prior to this episode.