Vintage USA made Bomber Jacket

I bought this jacket a while back because it’s a cool, insulated jacket made in the USA. Shell is nylon and lining looks to be foux shearling but unsure. Zippers and snaps all work well, elastic waist and cuffs are a cool olive green color and are not stretched out. Approximate measurements laying flat: shoulders 23”, chest pit to pit 22”, length 25”, sleeves shoulder to cuff 21”. To me, the design has shoulder seems further out and that is why the measurements of shoulder is wide and sleeve is short.