Damon Werth is a former Corporal in the United States Marine Corps and also a former mercenary associated with First Defense Incorporated, the largest private security firm in the United States.
NCIS Season 5Edit
Werth broke out of the hospital he was being held at in "Corporal Punishment" in a fit of rage. A senator got involved, revealing he was due to be given an award. He took a hostage, who he left behind for NCIS to rescue so he could identify his pursuers. The NCIS team tracked down the men he rescued to try and find him, leading to a direct confrontation in which Werth broke DiNozzo's nose and dislocated McGee's shoulder before being subdued. He was taken for treatment after a brief interrogation, believed to be the victim of a plan to create a super soldier. However they determined that he was the victim of no one but himself; it was his regular use of high end steroids that made him so powerful which caused all the trouble. He was dishonorably discharged, but not before Gibbs gave him his own medal, the same he was due to receive.
NCIS Season 7Edit
Werth was hired by First Defense Inc. and was part of the strike team which raided Gibbs's House in "Outlaws and In-Laws", believing himself to be rescuing a kidnapped girl. The girl was Mike Franks's granddaughter, and in reality, they were abducting her. Upon finding Ziva and Tony, Werth realized his employer lied to him, took down his own team, and offered his resignation to Colonel Merton Bell as he was arrested by NCIS.