Colt Gray had pleaded guilty to murder and other charges. A jury in March found Colin Gray guilty of second-degree murder in the deaths of two 14-year-old students, Mason Schermerhorn and Christian Angulo. Prosecutors said Colin Gray missed red flagsProsecutors say Colin Gray gave his son the rifle as a Christmas gift along with ammunition, a gun sight and other shooting accessories. Like Colin Gray, they were unaware of their son’s plans but had gifted him a gun before the shooting. ___This story has been corrected to show the school is called Apalachee High School, not Appalachee.