During the "A Soldier Comes Home" vignette, the US flags on the front porch are improperly displayed. Whether in the horizontal or vertical orientation against a wall, the union (stars) should be uppermost and to the observer's left.
In the scene in which the character had this hand blown off they are shown applying a Combat Action Tourniquet (CAT) to the lower half of the extremity, which you would never do seeing as since there are two bones in that area it'd be impossible to apply adequate pressure to stop the bleeding. They are always placed above the joint.