What does SSOI stand for?

Designated an international program/project or high-potential future foreign sales program, either Foreign Military Sales or Direct Commercial Sales, by the USD(AT&L) or Component Acquisition Executive or as further delegated Associated with a Technology Development Strategy as required for Milestone A or Acquisition Strategy at Milestones B and C with an international system or cooperative opportunity identified Associated with an international agreement, upon submission or approval of a Summary Statement of Intent or with international agreement entered into force Associated with an approved Letter of Offer and Acceptance for purposes of international sale, lease, or logistics support of U.