Troy Darren Grumbine RESOLVED Grumbine, circa 2004 Missing Since 02/02/2004 Missing From Irving, Texas Classification Endangered Missing Age 34 years old Height and Weight - Distinguishing Characteristics - 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 . .