A soldier acquitted of killing a mother and two of her young daughters in North Carolina about 25 years ago is now going on trial in military court after prosecutors say new DNA tests link him to the crimes.

Master Sgt. Timothy Hennis, 51, is charged with premeditated murder in the May 1985 stabbing deaths of Kathryn Eastburn and two of her daughters — 5-year-old Kara Sue and 3-year-old Erin Nicole. Opening statements in the court-martial are set for Wednesday and the death penalty trial could last up to two months, featuring 100 or more witnesses.

Hennis couldn't be tried again in civilian court so he was charged by the military, which can pursue the case because its court system is a different jurisdiction. Hennis retired from the Army in 2004 but was recalled to active duty to face charges.

Hennis, who had adopted the Eastburns' dog several days before the killings, was arrested four days after the bodies were found when a witness who reported seeing someone in the Eastburns' driveway late at night picked him out of a photo lineup.