Q 3633 : US Military Abbreviations AIA:  (1) Army Intelligence Agency; (2) ACE Intelligence Architecture; (3) ACE Interface Architecture; (4) Air Intelligence Agency AFIA:  Air Force Intelligence Agency DIA:  Defense Intelligence Agency ESC:  Electronic Security Command (U.S. Air Force) ITAC:  (1) Intelligence and Threat Analysis Center (U.S. Army); (2) Intelligence Tracking Analysis and Correlation NOIC:  Naval Operational Intelligence Center NPIC:  National Photographic Interpretation Center NSA:  National Security Agency SRD:  (1) System Requirements Document; (2) Special Research Detachment (U.S. Army) https://qmap.pub/read/3633 https://wikileaks.org/wiki/US_Military_Abbreviations