MASTER Sergeant (MSGT) Silver Kits, Estonia, finishes winding up a cable for the end of the second phase of testing, during COMBINED ENDEAVOR 2000. CE 2000, currently hosted by Germany, is the largest information and communication systems exercise in the world. This exercise is the sixth in a series of multinational communication interoperability workshops where military personnel from 35 nations get together for 14 days to focus on Command, Control, Communications, and Computers (C4) interoperability testing and documentation and to meet and interact on a personal level