Corrected entry: At the beginning of the show the name South Carroll Parish, Louisiana appears to indicate where the opening scene is happening. South Carroll Parish does not exist. It has to be either East or West.
Corrected entry: When President Kirkman is speaking to the 'Lieutenant' of the crashed ship, he promotes him to Captain. However, the Lieutenant is already wearing the lapel badge of a Captain before promotion. (00:02:00 - 00:05:00)
Correction: Navy lieutenants wear two bars. They are equivalent to Army Captains. However the ship commander is not necessarily a captain. In the Navy a captain is the equivalent to a full Colonel.
Corrected entry: The president refers to his Special Advisor as "Ann" when her character's name is Emily.
Correction: He doesn't call her Anne; he calls her "Em," short for Emily. He does this consistently throughout the series.
Corrected entry: Emily is entering the office to pick up Tom and Aaron for the dinner, she's wearing a black dress and her hair is pinned up. In a following scene, when Emily and Aaron are talking to MacLeish, Emily is suddenly wearing a blazer and her hairstyle is completely different. (00:02:10 - 00:04:35)
Correction: Her hairstyle is exactly the same, pinned up. And she's not wearing a blazer, just a thin shrug, which would be easy to put on given the time they had.
Correction: The show makes up place names all the time, such as for foreign countries that don't exist in real life. There's no reason they can't make up a county name too.
What you said is another correction that needs to be pointed out. Louisiana does not have counties, they have parishes. That is why they called it South Carroll "Parish."