Lieutenant Lewis is wearing a red Bull patch on his right arm for his unit patch.
Red-haired actresses: Lily Gibson, April Carlisle, Elise Robertson (the victim, in flashbacks).
Brad Blaisdell [Darrin Farr] and Lily Gibson [Rose Sutfin] were both in Simon Baker's other show The Guardian.
When Cho, once former special forces, witnesses Sgt. Hawkins stand up to his C.O. for an injustice done to a female member of his squad, Cho is moved to salute Sgt. Hawkins. All military personnel are very well aware that non-coms are not officers, and therefore never to be saluted.