The Department of Defense says Petty Officer 1st Class Kevin Ebbert, from Arcata, died Saturday in the country's Uruzgan province. The region is a mountainous area in the center of the country.
The Department of Defense says at the time of his death the 32-year-old Ebbert was supporting what it termed "stability operations."
Ebbert was assigned to an East Coast-based special warfare unit, a Navy unit that includes personnel commonly known as SEALs.
A DOD spokesman was not available for additional comment late Monday, but the unit's website says it deploys its personnel for "extreme-environment" operations at sea or in mountainous areas.