Two crew members have been killed after two helicopters collided mid-air in Greece while battling wildfires.
The fatalities were a Danish pilot and a Greek fire service liaison officer. A British pilot and another Greek co-ordinator on the second helicopter survived.
Video of the incident some 65 km (42 miles) west of the capital Athens shows one of the two Bell helicopters hitting the rotors of the other, which bursts into flames and crashes in a ravine. The other aircraft made an emergency landing.
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