When he is in his screen mom's car, actor Shane Conrad's hair is parted on his left and the left side of his shirt buttons over the right side (at around 4 mins), but as he is watches her drive off (from 15:10 to 15:25), the frames are flipped with his hair parted on his right and the right side of his shirt buttoned over the left side. Later, both the part in his hair and the buttoning of his shirt switch back (at around 39 mins).
Around the 7-9 minutes span, twice some Marine shouts "A-ten-HUT" when Colonel Knox enters a room. A Marine would instead shout "Attention on deck!"