totally dependent on communications
In addition to emphasizing the impact of U.S. communications research on C4I (i.e., command, control, communications, computers, and intelligence2), it is also important to briefly note the relevance to C4I of the engineering disciplines. Much of the basic mathematics that underlies telecommunications engineering is also relevant to command and control systems. Almost any computing device depends heavily on communications technology, both internally to communicate between subelements of the computer and externally to communicate with other devices. And the field of intelligence is replete with examples of reliance on telecommunications. Hence, telecommunications research is significant for and integral to the capability and capacity of many aspects of the overall defense system.
A strong U.S. telecommunications research capability is also important for several indirect reasons related to defense and homeland security:Skill base of engineering talent: education and training. To solve the specialized communications issues in C4I requires that the United States have the best telecommunications engineers in the world, which in turn requires that a vibrant commercial industry be maintained. Otherwise, the best engineers will migrate to countries that have protected or low-cost businesses, and ultimately U.S. security will be put at risk. More info: field service technician