The security and communications integrator said the upgrade -- the first for the airport since 2004 -- will be performed under a $1.8 million contract.
Work will include a command-and-control center, access control solutions and integration of the airport with the City of Killeen's video management system.
"With the growth both in the facility and demand of Killeen-Fort Hood Airport over the past 10 years, we had quickly outgrown our current system and had to address the change in security requirements and technology advances that surpassed our current system's capabilities," said Van Valkenburg, Killeen's aviation director.
"Thanks to the experience of G4S Technology, we'll now have a command-and-control center with integrated access control and video management that will provide total safety and protection."
Added Sam Belbina, president of G4S Technology: "We are pleased that Killeen-Fort Hood airport has chosen us to provide their important upgrade solution, thus keeping them current with safety and security requirements.
"Among the many things, our solution will provide immediate, remote back-up operations, so there will never be loss of access or control of security."
Additional details of the modernization were not provided.