DENVER (KDVR) — Passengers of a WestJet flight leaving Denver International Airport are being bused back to the terminal Thursday afternoon after an “incident” just before the plane took off, a Denver International Airport spokesperson confirmed. The flight was about to take off headed to Calgary, Canada, when the incident happened at about 12:30 p.m., the spokesperson said. There were no reported injuries, though the spokesperson did not say exactly what happened.