You avoided the part about MARS. They use STANAG. No more Winlink, except I think AF might still for some health and welfare traffic. To join MARS, and participate, would mean a $2K investment for each volunteer otherwise. Besides, they need interoperability, not "border walls" to make membership difficult. SHARES has been infiltrated by Winlink ARSFI, and ARSFI has a definitive conflict of interest. It solicits annual "donations" which it banks and gives its directors annual awards. Nice.