Sentencing is underway in Michigan in a groundbreaking case of parents convicted in a school shooting committed by their son. James and Jennifer Crumbley say their nearly 2 1/2 years in jail should be enough. They're asking for no additional prison time after being convicted of involuntary manslaughter. Prosecutors are seeking at least 10 years in prison. The Crumbleys didn’t know their son was planning the shooting at Oxford High School in 2021 that killed four students. But prosecutors say the parents failed to secure a gun and could have prevented the tragedy by removing Ethan Crumbley from school that day.