The red white and gold shield is Military Assistance Command Vietnam. I can't remember the other one, but my uncle referred to it as the "Hawaiian Cookie" I want to say it's an infantry division patch.
The 9th Infantry did a lot of Riverine patrol work. A prior post of the Hawaiian cookie, may have been referencing the Electric Strawberry (25th Division) which was based in Hawaii, or perhaps the psychedelic cookie as I remember calling it.