c
- C-17A Aircraft Warning and Caution Computer System (WCC)
- C4I Switching System (C4ISS)
- CEAFAR 3D Radar
- CEAMOUNT Illuminator
- Central IFF System AN/UPX-24(V)
- Centurion Harbor Surveillance Program
- Combat Electromagnetic Environment Simulator (CEESIM)
- Combined Intermediate-Level ATE (CIATE)
- Commercial Equivalent Equipment (CEE)
- Commercial Nuclear Power Services