It's interesting that the movie is called "Parkland" after the hospital in Dallas where JFK, Lee Harvey Oswald, and Jack Ruby all died.
What surprises me is that Parkland was notified that the President was coming into the hospital's ER, but the attending physicians were literally "out-to-lunch" in the hospital's cafeteria one floor above, so only a resident-trainee, James Carrico, was there to start treatment on the President.
I'm surprised they were caught off guard like that. It's not like its their business to know what to do for medical emergencies like that. Read more at "The Parkland Orgy of Death."