Enlarge / A five-foot-tall (1.5 meter) outdoor K5 security robot patrols the grounds of the Washington Harbour retail-residential center in the Georgetown district of Washington, DC, July 26, 2017.
Enlarge / A five-foot-tall (1.5 meter) outdoor K5 security robot patrols the grounds of the Washington Harbour retail-residential center in the Georgetown district of Washington, DC, July 26, 2017.