I have no idea when Morris served in MABS-11. I don't know what their location and operation was at that time. I don't know how old the patch is.
The image below is the only other example I've seen. It might be a recreated version simply for current sale.
I have not found much information on this unit. There is a page to reunite former members. I don't seem able to contact any of them unless I join and I can't join because I never served in the Marine Corps., let alone with that unit. It is said to have been part of the First Marine Air Wing. My wikipedia reference is to that entity.
First Marine Air Wing