1) “NCIS,” 8 p.m., CBS. LL Cool J (shown here) is turning “NCIS” into a lifetime assignment. He was Sam Hanna for 14 seasons on “NCIS: Los Angeles,” plus 12 episodes on “NCIS: Hawaii”; this fall, he’ll star in the new “NCIS: New York.” First, here’s his sixth “NCIS” episode. The team comes together to defend one of its own, who’s been framed for murder.
2) “NCIS: Origins,” 9 p.m., CBS. “Origins” will wrap its season next Tuesday, a week sooner than the other “NCIS” shows. Tonight, a car-bomb goes off near headquarters and Wheeler takes control. Also, we learn the roots of Franks’ perpetual hatred of lawyers.
3) “R.J. Decker” season-finale, 10 p.m., ABC. As a mid-season show, this has pushed to start and end big. It began with Decker going to prison, due to the schemes of a senator whose daughter, Emi, gave false testimony. Now he tries to get to the truth, with the help of his ex-wife and Emi and others.
4) “Bear Grylls is Running Wild,” 9 p.m., Fox. “This is not my natural habitat,” comedian-actress Tiffany Haddish says here. She’s a city kid from Los Angeles, climbing Colorado canyons; also, “I picked the wrong time of the month for this.” But Haddish — a former all-city track star — pushes through, adding some humor and personal reflections.
5) MORE: A musical night has the classic “The Wizard of Oz” (1939) at 7 p.m. on AMC and Dick Van Dyke in “Bye Bye Birdie” at 8 ET on Turner Classic Movies. And “The American Revolution” (9-11 p.m., PBS) reruns the sixth of eight episodes, with a much-needed victory helping lure French help.