Harris has ways to make its customers communicate. The company, which develops communications products for government and commercial customers in more than 100 countries, makes radio-frequency (RF) and satellite communications and other wireless network transmission equipment; air traffic control systems; and digital network management systems. Harris also offers specialized IT services. Harris' commercial clients come from the construction, energy, health care, maritime, oil, transportation, and utilities industries. One of its biggest customers is the US Department of Defense.