MANCHESTER, N.H. (Court TV) — A New Hampshire Marine veteran took the stand in his own defense on Friday, describing his military service, PTSD diagnosis and escalating custody disputes with the mother of his children before he fatally shot her in February.

Dustin Duren , 38, testified for hours about his relationship with Caitlyn Naffziger, 31, whom he is accused of murdering on Feb. 29, 2024. Duren faces charges of second-degree murder, reckless conduct with a deadly weapon and child endangerment in Naffziger’s death.

Dustin Duren testified in his own defense on Oct. 24, 2025. (Court TV)

The defendant detailed his military background, including deployments to Iraq and Afghanistan, and his subsequent diagnosis of service-connected PTSD. He described struggling with the condition aft

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