When Bethany refers to the letter from Dr. King she tells Weller "that's the reason I keep that letter on my wall." However, when we first see the letter in an earlier scene, it is not on her office wall, but in a frame on her desk.
In that severe a front-end crash, the airbags should have deployed.
The Commanding officer addressing the rest of the officers at the beginning of the episode is wearing Captain's Bars but a Lieutenant's Badge.