Special Duty Identifiers (SDI) identify authorizations for, and officers assigned to and performing an actual group of tasks on a semi-permanent or permanent duty basis. These duties are unrelated to any specific utilization field. No significance as to the interrelationship of these SDIs should be inferred from their grouping within this section.
United States Air Force Commissioned Officer Job Descriptions
SPECIAL DUTY IDENTIFIERS
By Rod Powers, About.com Guide
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