The prototype Lockheed UGM-27A Polaris sea-launched ballistic missile successfully flies a 500-mile trajectory in a Navy test. Three days later, the Air Force carries out the first flight test of the North American GAM-77 Hound Dog air-launched strategic missile at Eglin AFB, Fla.
The Air Force on Jan. 6 released nearly a dozen photos of F-22 and F-35 fighters returning to Puerto Rico after supporting the raid to capture Venezuelan President Nicolás Maduro—the first official images of forces who participated in Operation Absolute Resolve.

