I made a mistake, I watched it again and he called himself “A Vietnam time vet”. First time I ever heard any veteran use “time” in describing their service.
U.S. law (38 USC § 101, Definitions, line 29), which for purposes of benefits defines the “Vietnam era” as being
(a) February 28, 1961 to May 7, 1975 (for veterans who served in the Republic of Vietnam during that period) or
(b) August 5, 1964 to May 7, 1975 (for veterans who served outside the Republic of Vietnam during that period).