Wednesday the internet went wild with speculation over a mysterious high altitude aircraft that was seen circling the city of Denver, CO for about an hour.

Mystery Solved! Late Thursday the US Navy identified the aircraft as one of their own, a Navy E-6B Mercury. Nicknamed the TACAMO (“Take Charge and Move Out”), the E-6B Mercury is derived from the Boeing 707 and acts as a Communications relay and strategic airborne command post aircraft with a flight ceiling above 40,000 feet.

According to Denver7 News, A plane shrouded in mystery captured the attention of thousands on Wednesday.