What does ATSO stand for?

What does ATSO mean?

ATSO	Authorized Training and Support Organization Business » General
ATSO	Advanced Training and Security Organization Governmental » Military
ATSO	Anatolia Turkish Student Organization Academic & Science » Universities
ATSO	Australian Technical Standard Order Regional » Australian
ATSO	Alternative Transitional Standard Offer Business » General
ATSO	Advanced Technology Student Organization Academic & Science » Universities
ATSO	Affordable Translation Services Ottawa Business » Firms
ATSO	Ability To Survive and Operate Governmental » Military