The National Military Command Center (NMCC) is a Pentagon command and communications center for the National Command Authority (i.e., the President of the United States and the United States Secretary of Defense). Maintained by the United States Air Force as the "DoD Executive Agent" for NMCC logistical, budgetary, facility and systems support; the NMCC operators are in the Joint Staff's J-3 (Operations) Directorate.[citation needed] "The NMCC is responsible for generating Emergency Action Messages (EAMs) to launch control centers, nuclear submarines, recon aircraft and battlefield commanders".