Chopper 7 was over the serious crash in Woodstock near Dean Street and Gayle Drive.
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A car could be seen overturned in the grass. Two women had to be airlifted to the hospital with critical injuries.
One of the women was ejected from the car and was resuscitated at the scene, authorities said.
The other woman was trapped inside and crews had to rescue her.
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No other injuries are reported.
No further information was immediately available.