C3ISR stands for Command, Control, Communication, Intelligence, Surveillance and Reconnaissance
C3IIT stands for Command, Control, Communications and Intelligence Integration Test
C3IOA stands for Command, Control, Communications & Intelligence Operational Analysis
C3IIS stands for Command, Control, Communications, and Intelligence Information System
C3IEW stands for Command, Control & Communications Intelligence & Electronic Warfare
C3ID stands for Center for Children with Chronic Illness and Disability
C3IC stands for Coalition Coordination, Communications, and Integration Center (US DoD)
C3IAC stands for Command, Control, Communications, and Intelligence Acquisition Agency
C3I2 stands for Command, Control, Communications, Intelligence, and Interoperability
C3I/IS stands for Command, Control, Communications, and Intelligence/Information Systems