Which organization is responsible for providing communication equipment and capabilities for decision-making in military operations?

The Defense Information Systems Agency (DISA) is the organization responsible for providing communication equipment and capabilities that support decision-making in military operations. DISA plays a crucial role in ensuring that the Department of Defense has the technological infrastructure necessary for effective communication, information sharing, and operational command. This agency develops and manages communication systems that facilitate secure and reliable exchanges of information among military personnel and decision-makers, which is essential for the successful execution of military operations.

In this context, the focus of DISA's mandate on military communications highlights its importance in integrating various technologies and supporting joint military efforts, which distinguishes it from the other organizations mentioned. The CIA, while involved in intelligence gathering, does not specialize in communication capabilities for operational military use. The FBI is primarily focused on domestic law enforcement and national security issues, and the DHS covers a broader scope of homeland security. Hence, their functions do not directly align with the specific communication needs of the military.