Link 16 is an advanced system used to help military aircraft, ships and ground forces in the U.S. Navy, Air Force and Marine Corps. It allows them to stay connected with each other, share data and control their activities. Link 16 is a digital system that uses radio signals to exchange information. It is like a digital version of our cellular network, but built for military use. Link 16 is like a digital phone line that all military units use to communicate. It helps them stay in touch with each other and make sure they know what's going on around them.