An M134 minigun mounted M113, but with an added M2HB for the driver!
And one of the six M163 Vulcans sent to Vietnam beginning in 1968. This is at the Port of Saigon. Notice the odd camo scheme. Units 1 and 2 had the dishes mounted, but no actual radar set was installed. Units 3-6 had no dish.
That's it for this installment. More stuff next episode.