Many of the surprises we will discover in Season 6 seem quite different from the previous season. The events of this season begin with a terrible jump of an aircraft carrier at sea, and two cyclists find the body of a lieutenant colonel who has been appointed to the office of maritime legislative affairs. On the other hand, Ziva returns to the NCIS and there are many facts to be revealed about Gibbs and there is a neighbor finding the body of the Marine Corps and accordingly Gibbs is investigating the company and facing Fornell. Fornell says that the person of interest is also a key witness in another murder.