Helicopter flying in sky coming in to land at hospital appears to be silver. When landed it is red.
When Dr. Benton treats a gunshot victim Mr. Brady, about 13 minutes in, the bandage near the wound on his upper arm appears and disappears; and although the bullet supposedly traveled through the arm, the makeup artist simply swabbed the barest hint of blood on the arm.
The coffee pot that Lewis picks up has an orange spout and handle, which is what you use for decaf. It's unlikely that's what she was looking for. The caffeinated coffee pot has a brown spout and handle.
At around 20 minutes, Dr. Benson tells a husband regarding his injured wife that "she's going to die," yet his mouth does not move for the line.
John Carter is a third-year medical student but is routinely called "Doctor" by all of the hospital staff. This is completely improper since no medical school in the United States allows students to assume the title of doctor before they officially graduate.