Canadian army Lt. Col. TS McLean, officer-in-charge of Combined Joint Communications Control Center explains the capabilities of the CJCCC during Combined Endeavor 2012, Joint Multinational Training Command, Grafenwoehr, Germany, Sept. 19, 2012. CJCCC is the command and control center for the exercise scenario of CE12. CE12 is a multinational command, control, communications and computer systems exercise designed to build and enhance communications and network interoperability between 41 nations and international organizations.