Homeland Defense

Mission Area

Homeland Defense

Johns Hopkins APL’s Homeland Defense Mission Area develops innovative and effective solutions to defend the U.S. homeland and its critical infrastructure from increasingly diverse and sophisticated adversary threats. As offensive systems that can endanger our homeland emerge and evolve, APL envisions and creates critical defense technologies that will protect our nation. We develop cutting-edge solutions to support the missions of the Department of War and Department of Homeland Security to secure the United States from threat.

Leadership

Highlights

U.S. Space Force Guardians assigned to Space Delta 5 monitor computer workstations on Dec. 18, 2025, at Vandenberg Space Force Base, California, supporting command and control of the Combined Space Operations Center. (Credit: U.S. Space Force)

Space-Based Interceptor

APL serves as technical direction agent for the U.S. Space Force’s Space-Based Interceptor program, in support of Golden Dome for America.
Learn more about Space-Based Interceptor
Experimentation at Falcon Peak 25.2 (Credit: Department of Defense/Devon Bistarkey)

Skyward

Skyward is a decision-support tool for defense operators that offers a real-time threat assessment and course-of-action recommendation for each drone it detects.
Learn more about Skyward
View of twilight from cockpit of a plane, with instrument panel in foreground (Credit: Bigstock)

ACAS X: Airborne Collision Avoidance for the 21st Century

ACAS X is a 21st century collision avoidance system that will help human pilots share the airspace with uncrewed vehicles.
Learn more about ACAS X: Airborne Collision Avoidance for the 21st Century

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