It was an emotional day in court for two Nova Scotia mothers who lost their sons in a head-on collision with another vehicle in November 2011.

The second vehicle was driven by William Lionel Edmund Byron Fogarty, who has been charged with two counts of impaired driving causing death and two counts of dangerous driving causing death.

“It’s been a long time but it’s not getting any easier,” says Debbie Green, the mother of crash victim Kory Mattie. “They say time heals all wounds. Nothing’s healing yet.”

Police say the 32-year-old Antigonish man was behind the wheel of his 2002 Crown Victoria when he collided with a 1994 Mustang along a curve on Highway 4 in Tracadie on Nov. 24.

The driver of the Mustang, 16-year-old Kory Mattie of Havre Boucher, was pronounced dead at the scene.

His friend and passenger, 17-year-old Nicholas Landry of Tracadie, died a short time later in hospital. Fogarty received minor injuries in the crash.

The mothers of the victims say they needed to attend the trial, which started Monday in Antigonish.

“It’s mixed emotions,” says Jeannie Landry, mother of Nicholas Landry. “It’s hard to hear the details and it’s hard to see the witnesses up there giving their testimony as well.”

The first two witnesses testified they each called police after they spotted Fogarty’s car driving erratically before the crash.

Witness Wanda Warner was one of the first people on the scene after the collision. She says Mattie was already dead, and she could tell Landry was dying.

Warner also testified that she heard Fogarty on a cellphone, screaming:

“Mom, I just killed a kid! Do you hear me mom? I just killed a kid!”

Jeannie Landry says she wishes Fogarty would think of her and Kory’s mother and plead guilty to the charges laid against him.

“End it and own up to what you did, I guess, so we can put this behind us and not be put through this trial again and let the boys have peace,” she says.

“Justice. I want justice,” says Debbie Green. “I want whatever it takes for that man to never get behind the wheel of a car again, that’s all I want.”

Eight days have been set aside for the trial. The Crown expects to call as many as 15 witnesses to the stand.

It is not known how many witnesses the defence may call in response.

With files from CTV Atlantic's Dan MacIntosh