This case of "Washington DC Sighting" , is actually the beginning of the period of "don't talk, you didn't see" era in the information being made to the public. Up to this point pilots spoke freely as did any person having witnessed a sighting as well as the press reporting such activities , the encounter also marks the actual name to be branded the moniker 'Project Blue Book' after the Washington DC sightings of 1952 the term was coined not before.
The Air Force did scramble their fastest jets to attack the "unknown objects" which were as shown no capable of keeping up with the aerial acrobatics of the "flying objects" in maneuvers or their rate of speed. This was reported in 1952 in all the press at the time. One of the last times that the press freely could publish the sightings.
Out in front of the Washington Monument when the second sightings were reported, there are two college students throwing a frisbee, this is not correct in the timeline, Frisbee were first mass produced in 1957 by Wham-O and before that they were called Pluto Platters, they were not readily available so the students are using a red disc that looks like a Frisbee or just a foreshadowing device for the audience.
The trivia item below may give away important plot points.
The death of Secretary of Defense William Fairchild, while fictional (as is the actual character), bares some similarity to the death of real Secretary of Defense James Forrestal. Forrestal plummeted to his death at Bethesda Naval Hospital on May 22, 1949 under mysterious circumstances while undergoing treatment. Forrestal's death has been linked by some in the UFO field to his being an alleged member of Majestic 12, a group reportedly set-up to investigate the phenomenon after the crash at Roswell.