The DoD has added the ability to search using an Individual Taxpayer Identification Number (ITIN). This change was needed in light of the fact that being a U.S. citizen is not a requirement to serve in the armed forces, and thus the prior search functionality (which only used SSNs) potentially excluded covered individuals.
My opinions are not necessarily my employers.
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell