7 p.m., CBS (new)
There's a murder aboard a Navy ship, and the team is on board to investigate. One of the suspects stuns them: It's McGee's father.
7 p.m., ABC (new)
The two lowest-scoring divers face off. One has to go home.
7 p.m., Fox (new)
Olympic athletes Maurice Greene, Natalie Coughlin and Danell Leyva appear on the show to help Chef Ramsey with a 3K run. Contestants have to prepare healthy food for the runners.
“180 Days: A Year Inside an American High School”
8 p.m., PBS (new)
About half the students don't show up each day at Washington (D.C) Metropolitan High School, the subject of this new documentary that focuses on students. They face a variety of challenges: one moved to D.C. from New Orleans with family after Hurricane Katrina, one is a foster-care regular and one has excellent grades but no money for college.
“The New Normal”
8:30 p.m., NBC (new)
David gains respect from fathers and their sons when he chaperones a Boy Scout. One dad, however, disapproves, causing complications.
“Ultimate Soldier Challenge”
9 p.m., History Channel (new)
Tonight, it's Army vs. Navy in competitions including close-quarter combat and shooting, both assault rifles and machine guns.
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