Global Command and Control System

Global Command and Control System (GCCS) is the United States' armed forces DoD joint command and control (C2) system used to provide accurate, complete, and timely information for the operational chain of command for U.S. armed forces. "GCCS" is most often used to refer to the computer system, but actually consists of hardware, software, common procedures, appropriation, and numerous applications and interfaces that make up an "operational architecture" that provides worldwide connectivity with all levels of command.

Source: Wikipedia — Global Command and Control System (CC BY-SA 4.0)