Deriek Crouse , 39 , was killed Thursday conducting traffic enforcement on the Virginia Tech campus . Authorities : shooter shot while he was in his police uniform , then was later shot himself . Bob McDonnell said of Crouse at Monday 's service . ` Crouse , a U.S. Army veteran , had been on Virginia Tech police force since 2007 .
Deriek Crouse , 39 , was killed Thursday conducting traffic enforcement on the Virginia Tech campus . Authorities : shooter shot while he was in his police uniform , then was later shot himself . Crouse , a U.S. Army veteran , had been on Virginia Tech police force since 2007 .