Marcus Alfred » Faculty & Staff Faculty & Staff Directory Go back to directory. Add to Address Book. Marcus Alfred Security – Sergeant, Galveston County Sheriff’s Department N-102Security Work Phone: 409-944-1446work Work Email: znyserq@tp.rqhude.cg@derflamINTERNET Categories: Facilities & Security Updated 3 years ago. Contact Galveston College Phone 409-944-4242 Fax 409-944-1500 Email info@gc.edu