Defense Communications System 
Data Collection System 
Defense Courier Service 
Deputy Chief of Staff 
Defense Communication System 
Distributed Control System 
Distributed Control Systems 
Defense Communications Systems 
Digital Command Signal 
Distributed Communications System 
Digital Cellular System 
Detail Checkout Specification 
Digital Communication System 
digital computer system 
Digital Cross-connect System 
Direct Commercial Sales 
Dynamic Channel Selection 
data communication system 
decompression sickness 
defined context set 
Desktop Color Separation 
Digital Camera System 
Digital Coded Squelch 
Digital Command System 
Digital Communications Subsystem 
Digital Crossconnect System 
Display Control Subsystem 
Division of Child Support 
Debris Containment System 
Defence Communications System