As the Commissioner sits down at the start of the interview with Officer Addison, he removes his glasses and at the next shot from a different angle, he removes them again.
The Texas Ranger crosses his thumbs while firing. This would hurt or even cut him as the slide actuates.
Near the end when getting ready to leave. Jamie is wearing a white shirt instead of his navy blue/black shirt. The NYPD only gives the white shirts to the rank of Lieutenant or higher.