The George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) is the product of more than a decade of planning by the earthquake engineering community. The NEES network infrastructure encompasses management headquarters; 14 earthquake engineering and tsunami research facility sites located at universities across the U.S. -- available for testing on-site, in the field, or through telepresence; and cyberinfrastructure operations that connect the work of the experimental facilities, researchers, educators and students.