 Schertz is the third-largest city in the San Antonio-New Braunfels metropolitan area and the largest city of the Randolph Metrocom, which consists of cities surrounding Randolph Air Force Base.The Metrocom is located on San Antonio's far northeast side.In addition to Schertz, other Randolph Metrocom communities include Live Oak, Kirby, Converse, Marion, Cibolo, Universal City, Windcrest, Garden Ridge, and Selma.