Ma'am!
Found the below:
Department of Defense Public Record
Name : OLEN WAYNE JR GARRETT Service : ARMY Service Component : REGULAR Pay Grade : E-3 Military Specialty : 11B1O00
You wrote that your uncles MOS were: 11E20 Armor Crewman, but that he served in the 129th "Avn CO". (AHC) The MOS you posted, would make him either a "Tanker", or a "ArmCav". (Ground). The MOS I found him listed as, is for "Infantryman". ("Legs" so to say). However, as many Vietnam Veterans knows, MOS-listings were "not always" reflecting what Really served as....
Check your late uncles photoalbums. See if you can find any names by photographs there. Letters home, while in RVN, is also a good place to seek info of names. Compare with "Rosters" and/or guestbooksignings in websites of units your uncle served in. Post there yourself aswell. Examples of websites of units, as you wrote he served in the 129th "Avn Co" (AHC), are below. Have also put links to "larger" unit-websites, which the 129th AHC was a part of, during some periods.
Before posting links, I also whish to address "Nam_Angel". Nam_Angel, Ma'am! From what I can read from your posts here, you certainly have earned your "handle". If I could, I would give you a Big Hug, and buy you the largest cup of coffee you have ever seen! You are a sweet, warm and kind L-a-d-y!
T G C, and Good Luck!
Sincerely
A.B
Links as follows:
129th AHC ?Bulldogs? ( 268th Avn Bn ((09/67-07/71)) / 17th CAG / 1st Avn Bde ):
http://www.129th.net
http://www.geocities.com/rojoeagle/0129mc.html
http://donald_6.tripod.com/129thmiakia1.htm
268th Avn Bn ?Black Lightning?:
http://www.1stavn.com/17th_268bn.html
1st Avn Bde:
http://www.1stavn.com
http://www.geocities.com/Pentagon/2669/1abd.html