FLIR Systems manufactures and distributes “thermal imaging systems, visible-light imaging systems, locator systems, measurement and diagnostic systems, and advanced threat detection systems” (company website).
In the military field it manufactures sensors and visible and thermal imaging and radar systems for helicopters and weapons sights.
In November 2016, it acquired Prox Dynamics, manufacturer of “nano-class” drones “for military and para-military surveillance and reconnaissance” (company website).