MILWAUKEE, Wis. -

An Iraq War veteran convicted of fatally shooting his police officer wife in the Milwaukee area has been sentenced to life in prison, with no chance for parole for 35 years.

Thirty-year-old Benjamin G. Sebena pleaded guilty earlier this year to first-degree intentional homicide. The charge carries a mandatory life sentence, but the judge on Friday had the choice to allow for the possibility for parole after 20 years. Wisconsin doesn't have the death penalty.

Thirty-year-old Jennifer Sebena, a Wauwatosa police officer, was conducting a pre-dawn patrol on Christmas Eve when her husband gunned her down.

Benjamin Sebena told investigators he was a jealous husband.

He initially pleaded insanity, but changed his mind in June after two doctors concluded his mental-health issues weren't severe enough to justify the plea.