L3 Technologies has grown very quickly into the sixth largest defense company in the United States, and is a leader and prime defense contractor in Intelligence, Surveillance and Reconnaissance (ISR), secure communications, government services, training and simulation and aircraft modernization and maintenance. The company also is a leading merchant supplier of guidance and navigation products and systems, sensors, scanners, fuzes, data links, propulsion systems, avionics, electro optics, satellite communications, electrical power equipment, encryption products, signal intelligence, antennas and microwave products. In homeland security, L-3 has leadership products in aviation, port, maritime and cargo security as well as solutions for mass transportation. In addition, L-3 offers other key homeland security products and services for crisis management, intrusion detection, law enforcement and vehicles for first responders.