A medical helicopter crashed on a highway in Sacramento on Monday evening, critically injuring three people aboard, including a woman who had to be rescued from underneath the aircraft, according to officials. The helicopter had taken a patient to a hospital and was on the way back to the place it had been dispatched from when it experienced an “in-air emergency” just after 7 pm, said Captain Justin Sylvia, a spokesperson for the Sacramento Fire Department. A pilot, a nurse and a paramedic were taken to hospitals and were in critical condition, he said. No one on the highway was injured, he said, calling that “mind-blowing” given that the helicopter crashed in the centre of the highway. “People reported that they basically saw the helicopter kind of going down quickly.