Sgt. Russell Garthwaite, MSgt, USAF (Ret) » Staff Listing Administration | Leadership Team | Support Staff | All Staff Listing Go back to directory. Add to Address Book. Sgt. Russell Garthwaite, MSgt, USAF (Ret) Aerospace Science Instructor Explosive Ordinance Disposal JROTC InstructorCTE Department Desk Phone: x54338work Teams Phone: x70292cell Email: firstname.lastname@example.orgINTERNET Categories: CTE Teacher Updated 2 years ago.