The cup of coffee that Abby gives to Gibbs is smaller when McGee knocks it out of his hand in the hallway.
Inside Abby's lab, she gives Agent Gibbs a Large coffee, but when he's leaving the lab the coffee cup in his hand is clearly a smaller size. This is when Special Agent McGee (Probie) bumps into him and knocks it to the ground.
Yun shoots Lee in the thigh. Later McGee is shown bandaging his calf.
When Sgt. Porter accuses his wife of abuse and shows his bruises, on the first shot (close-up) of his torso the bruises are on his right side, in the next shot (long) they are on his left.
When Sgt. Porter shows his bruises and they appear to move t one side of his body to the other, the long view that looks as if his bruise moved was actually a view in the mirror of the interrogation room. The mirror view would naturally reverse everything.
Gibbs mixes the baby formula incorrectly. First, he does not wash his hands. Second, he adds the powder before the water; you need to add water before powder for accurate measurement.