It is supposed to be late May, yet most of the trees are bare and everyone is wearing heavy clothing, like overcoats or sweaters.
When Benson and Stabler arrive at the burger joint one of the uniformed officers says that the victim is locked in the office with the perp and that the office door is reinforced steel so they can't get it open until ESU arrives with breaching charges. When Stabler asks where the keys are the officer says the manager has the only set and is MIA. The general manager wouldn't be the only person with a set of keys to the building. In pretty much every fast food and restaurant chain in the country the district manager and assistant manager would also have their own sets of keys to the main doors, the office door and the safe. The shift supervisors also usually have their own sets of keys as well.
When Benson and Stabler first arrive at Aerodax, the employee they are talking to says that Merritt Rook is "a audio engineer" instead of "an audio engineer".