I think it's the 2nd, but there's no label. There are traces of a patch on the chest and traces of Air Force rank insignia on the sleeves. Reflective tape is attached to the left sleeve. The size is approximately US size SR. I don't want to get rid of it, but I'm selling it because it no longer fits. The sleeves have gussets. However, the collar zipper is aluminum, while the front zipper is brass? #field jacket #surplus #used #US Army #vintage clothing #Vietnam War #OD #M65 #personal equipment #rain #autumn and winter # #