Troy Darren Grumbine RESOLVED Grumbine, circa 2004 Missing Since 02/02/2004 Missing From Irving, Texas Classification Endangered Missing Sex Male Race White Age 34 years old Distinguishing Characteristics Caucasian male. Details of Disappearance Grumbine disappeared from Irving, Texas on February 2, 2004. The night after he disappeared, he was accidentally struck by a vehicle and killed on Interstate 10 in Arizona. Grumbine wasn't identified until August 2014. Investigating Agency - Source Information The Chickasha Express-Star . .