The episode begins where the last one left off.  Delilah Fielding was injured in the terrorist attack at a dinner gala, and wakes up in the hospital just after her surgery, with McGee standing over her.  Suddenly she stops breathing and has to be stablizied and sent back in for a second surgery because of internal bleeding. As soon as she's stable, McGee decides to return to work, despite not having been cleared for duty by the NCIS psychiatrist, Dr. Rachel Cranston.  Gibbs tells him to go easy, intuiting that something's not right with McGee, and the doctor confirms this later on.  It turns out that what McGee has been hiding is the fact that the shrapnel from the blast has injured Delilah, and she is now paralyzed.  McGee doesn't know how to handle the situation, and tries to repress all emotion.  Meanwhile, Gibbs finds the bullet that he shot which injured Parsa's driver. DNA testing shows that the driver is Bashir Malik, a man who previously came up on the radar when another place was bombed back in 1990.  It turns out that Malik is a transporter: of goods, and of people, and of whatever else anyone will pay him to transport. He eventually tells Gibbs all he knows about Parsa, which isn't much: he took him to a train to Miami, and knows that Parsa will exit the train before reaching its destination, but he doesn't know where that is.