"I feel like if I sit back and don't do something about it -- another life might be lost," said Karisa Leong.

"I watched him struggle. And though he wasn't locked up physically, he was locked up inside," she said.

Four days ago, in the driver's seat, she watched, as her husband ended his life.

"He grabbed my arm, flew it back at me, opened the door and jumped out," she said.

"I know he never forgave himself for what happened years ago," said Leong's mother-in-law, Tracey Stein who lives in California.

It was 1998.

Keala Leong was with a group of young men who tried to break into a cabin at the Waianae Army Recreational Center.

Roberto Miguel and Bryson Jose were later convicted of murder for killing helicopter pilot John Latchum.

John's family witnessed the horror of his death.

"He'll never get to walk his daughter down the aisle. He'll never get to watch his son go on his first date or teach him how to drive a car. There are a lot of nevers in our lives," said Wendy Latchum in 2000.