Likely not the "H" models. The H models were standing alert,ready for Nuclear combat, toe-to-toe with the Russkies.
Vietnam was mostly D & G models. The H models, last one built in 1964, are all that is left. The last D was made in '57. The G's were all destroyed as part of the treaties with the aforementioned Ruskis.
The G & H models were considerably different aircraft than the earlier models. The main initial difference being the H models used, and use, the TF-33 medium bypass turbo-fan engines, while the Gs used the J-57 pure turbojet.