Boeing 787 Dreamliner drawing a giant aircraft in the sky

N7874, a Boeing 787 Dreamliner is currently flying above the United States and drawing a giant aircraft in the sky (wingspan is around 2400 km), you can track the aircraft via this link on flightradar24.

Tracking live on @planefinder – @Boeing 787 Dreamliner drawing a 787 Dreamliner over the USA ? https://t.co/ZAspmQa2y9 pic.twitter.com/ajIs8XSRow

— CivMilAir ? ? (@CivMilAir) August 3, 2017

The aircraft begins to take shapehttps://t.co/ltUSXWvJ2a pic.twitter.com/Le9mkuMh5v

— Flightradar24 (@flightradar24) August 3, 2017

See how and *why* @BoeingAirplanes decided to draw a giant 787 in the sky. https://t.co/9zGZc72Prf #dataviz by @itoworld #avgeek pic.twitter.com/VCvUasoFfz

— Flightradar24 (@flightradar24) August 3, 2017