NCIS Season 3 Episode 19

Two frolicking rascal brothers find a corps under the ice. It's USMAC first sergeant Ryan Downing, missing for months on leave from Iraq. The team finds three other Salvadorians with La Vida Mala gang tattoos in that pond, all killed with his Browning. Ryan was shot with two other guns. Two of the dead Latinos killed one of Ryan's unit men earlier. Gibbs leans on their Manassas branch chief and discovers a problem they can't solve legally.