“NCIS” (9 p.m., CBS): On the latest episode of “NCIS,” two members of the

“NCIS” (9 p.m., CBS): On the latest episode of “NCIS,” two members of the team are sent to Iraq after a mortar attack in Baghdad turns into a murder investigation. Also, Rocky Carroll returns as Leon Vance, assistant director of the NCIS.

“Law & Order: Special Victims Unit” (10 p.m., NBC): “Law & Order: SVU” is hitting an amazing milestone: Its 200th episode. Of the “Law & Order” shows, “SVU” has a knack for sensational twists, which has been a hallmark. And, the series features compelling and layered lead characters. Meloni, an actor of great depth and a keen ability to play darkness, makes the most out of the role of Stabler, a seasoned veteran of the unit who has seen it all. Hargitay, an Emmy winner, has found the perplexity within Benson, whose complex past — she was a product of rape — is the reason she joined the unit. Their chemistry, backed with consistently intelligent writing, makes “SVU” one for the books.