TDCJ correctional lieutenant assigned to Hamilton Unit in Bryan dies after contracting COVID-19 Texas Department of Criminal Justice and last updated 2021-01-15 22:11:59-05 BRYAN, TX â A Texas Department of Criminal Justice employee assigned to the Hamilton Unit in Bryan has died after contracting COVID-19. 57-year-old Correctional Lieutenant Treva Preston dedicated more than 16 years of service to the state and the TDCJ. She was hospitalized at a Bryan hospital on January 4 after testing positive for COVID-19. She died in the early morning hours of January 15. âTreva Preston is a prime example of someone choosing to serve,â said TDCJ Executive Director Bryan Collier. âShe was a training sergeant then Lieutenant who left a long-standing legacy at TDCJ. The Texas Department of Criminal Justice family will honor her service and grieve her loss. Our prayers are with the Preston family in these trying times. Treva Preston will always be remembered.â