Not so fast…there are still NASOs, as well as their counterparts in the surface, sub and expeditionary warfare communities. Basically, become a Supply Corps Officer, then have a "significant tour" in an aviation environment (CV/LHA come to mind…I'm sure there are others), and do the PQS or whatever quals there are. But I do think it's a "officer warfare specialty qualification badge"…not a wholly separate designator or career field.