What is Charles Darwin's major contribution to science? A. He performed an experiment showing how molecular compounds first formed. B. He categorized - 463782
Confidence votes 39. I belive they were murdered, while gibbs was at war as a sniper for the marines. and then later gibbs ends up shooting the man who killed his wife Shannon, and his daughter Kelly. 1 person found this useful.
List of Appearances. Jackson Gibbs was the father of NCIS Special Agent Leroy Jethro Gibbs. He served as a pilot of a P-51 Mustang in the Army Air Forces in World War II. After his son left to join the U.S. Marines, Jackson Gibbs continued to live in the town of Stillwater. Jackson Gibbs was played by Ralph Waite who played Hank Booth, Seeley Booth's grandfather in the TV series, Bones. 2  On his Twitter, Jesse Stern revealed that actor James Garner was originally cast to play Jackson Gibbs but later suffered a stroke after reading the script for the Season 6 episode, Heartland (episode) .