Great episode, even if the promo's were a little misleading. This one was hyped a lot with the guest appearance of Terrence Howard and T.I. So naturally, I thought the story would be present day and part of a new larger arc. Turns out that their scene was only a flashback of Danno's, recounting how he and his partner were held captive. She dies, and as it turns out, her name was Grace, which is what he eventually names his daughter. The twist (a very good one I may add) at the end is that all this took place on 9/11 in New York.