Crouse, a Virginia Tech Police Officer, was gunned down Thursday on campus.
"He was so precious," Crouse's mother, Bonnie Arnold said. "I don't know how we are going to live without him."
Crouse is survived by his mother, wife Tina Crouse and one biological child, 16-year-old Dustin Crouse.
He also has four step-children -- all boys.
After graduating from Carroll County High School, Crouse enlisted in the Army.
He retired from the Army, then went back into the reserves as a staff sergeant.
Crouse did an 18-month tour in Iraq from 2003 to 2004.
From there, Crouse came back to the area and worked at the New River Valley Jail and the Montgomery County Sheriff's Office.
In October 2007, he joined the Virginia Tech police office where he was part of the SWAT team.
He also won numerous awards at the department.
The family tells us Crouse liked to joke around, but he took his job very seriously.
The family's big question to bring them closure is why this happened, and they don't know if they will ever get an answer.
Watch NEWS7 at 5 and 6 to see Pietrzak's interviews with the family.