When does NCIS: Sydney return?

The concept and characters were first introduced in two episodes of the CBS series JAG. The series premiered on September 23, 2003, on CBS. To date it has entered into the twentieth full season and has gone into broadcast syndication on the USA Network. In 2011, NCIS was voted America's favorite television show.
NCIS is an American police procedural drama television series. Based at the Washington Navy Yard in Washington, D.C., the NCIS team was led by Leroy Jethro Gibbs, a former United States Marine Corps Gunnery Sergeant Scout Sniper.