I want to know if it is correct to treat AF as a proper name and thus write "AF's concept" or if I must take the words of the initialism into consideration and write "AFs' (as I would write "Armed Forces' concept of protection" if I didn't use the initialism).
The link provided gave me conflicting answers about which way is right, and the main issue in the argumentation seemed to me to be the dubble s-es.