U.S. Northern Command said the decision to end the search for the objects shot down over Alaska and Lake Huron came after the U.S. and Canada "conducted systematic searches of each area using a variety of capabilities, including airborne imagery and sensors, surface sensors and inspections, and subsurface scans, and did not locate debris." Northern Command said air and maritime safety perimeters were also being lifted at both those sites. There has been no comment from the United Federation of Planets regarding their search and rescue efforts.