BRENTWOOD, N.H.>> A former Pearl Harbor submariner has been sentenced to two to four years in prison for beating a man on a Portsmouth, N.H., street last year.

Sandy Portobanco apologized to the victim and his family in court on Wednesday for what he called the biggest mistake of his life.

Stephen Huntress of Kittery, Maine, suffered serious brain injuries.

Portobanco and Gerald Smith of Honolulu were crew members of the Pearl Harbor-based USS Greeneville nuclear submarine, which was being repaired at the Portsmouth Naval Shipyard. They have both been discharged from the Navy.

In addition to the sentence, the Portsmouth Herald says the judge ordered Portobanco to split the $17,175 in restitution with Smith and undergo a substance abuse and anger management evaluation.