BAE Systems has been awarded a five-year contract, worth up to $137 million, to provide lifecycle management and sustainment of the U.S. Navy's command, control, communications, computers, combat systems, intelligence, surveillance, and reconnaissance (C5ISR) systems. Under this contract, awarded in November, the company will also train military personnel on how to operate the C5ISR systems. C5ISR systems are built, integrated, and networked to improve military operators' and decision makers' situational awareness. Integrated C5ISR systems are then fielded to military installations across the U.S. and abroad, where personnel are trained on how to leverage the systems' full capabilities. As part of this contract, BAE Systems will provide post-fielding support and sustainment, including implementing various technical upgrades and cyber hardening; in-service engineering; and logistical support to end-users who are on-site at U.S. government facilities.