Henrietta "Hetty" Lange
The third season of NCIS: Los Angeles premiered on September 20, 2011. The two hours season finale was aired on May 15, 2012 on CBS.
The fourth season of NCIS: Los Angeles premiered on September 25, 2012 on CBS and January 6, 2013 on Sky 1.
Callen and Sam are trapped in an armed submarine that terrorists have aimed to hit an aircraft carrier in San Diego. Meanwhile, Hetty defies orders and forgoes her trip to Washington, as the team tries to locate and save Callen and Sam and prevent the terrorist attack.