evidence: An unidentified object was shot down 10 miles off the frozen coast of Alaska on Friday afternoon, US officials announced, but details about the object are scarce. [...] Ryder also emphasized that officials do not know the origin of the object, which did not appear to be manned and that it was shot down because it posed a "reasonable threat to civilian air traffic" as it was flying at 40,000 feet. Ultimately, the object was downed near the Canadian border and northeastern Alaska by a F-22 fighter jet out of Joint Base Elmendorf-Richardson, Alaska, equipped with an AIM-9X – the same aircraft and missile used to take down the surveillance balloon. A US official said the military waited to shoot the object down during daylight hours to make it easier for the pilots to spot it. Ryder said the mission was "supported with aerial assets from the Alaska Air National Guard."