Tail Spin

S5 E12: When a regional air traffic controller, Neil Rawlings (FRANK GRILLO), goes missing, Jack and the team learn that he had been distracted recently but was otherwise an exemplary employee. But as they dig deeper, they find out that Neil was threatened by a Middle Eastern pilot whom he reported to the authorities for circling a power plant in restricted airspace. Also, Neil owes a lot of money to the hospital where his wife died from injuries sustained in a recent car accident, and his teenage son has gotten deep into debt to drug dealers. After Elena discovers an inconsistency in one of the recordings of the control tower radio transmissions, the investigators try to unravel just how much trouble Neil was in and what happened to him.