WASHINGTON Feb 12 US authorities closed airspace on Sunday over Lake Michigan for air defense operations, the North American Aerospace Defense Command (NORAD) said.
«In cooperation with the Federal Aviation Administration… NORAD has introduced a temporary airspace restriction over Lake Michigan… to ensure air traffic safety in the area during NORAD operations,» the press release said.
The restrictions have now been lifted. The essence of the operations of NORAD, which is responsible for the air defense of the United States and Canada, is not explained.
The day before, the same measures were introduced in Montana due to the alleged presence of an unidentified aircraft in the sky over the state, which was ultimately not detected.
In recent days, the US military spotted and shot down three air targets — a Chinese balloon over the Atlantic and two aircraft of unknown origin and destination over Alaska and Canada.