Elon Musk tweeted to his followers, saying "Don't worry, just some of my Alien friends of mine stopping by" in response to the recent incidents of US shooting down unidentified flying objects.
US Air Force and National Guard pilots shoot down object over Lake Huron, causing security concerns and strain with China.
Another object shot down by US fighter jets off northern Alaska, in US sovereign airspace.
US and Canadian orders result in US F-22 jet shooting down object over Canada's Yukon Territory, posing threat to civilian flight.