Two military helicopters have collided in mid-air, leaving one man dead and another three injured.
The crash happened at an airfield in Ternhill near Market Drayton in Shropshire, just before 1500 GMT.
The Squirrel aircraft were from the Defence Helicopter Flying School, based at RAF Shawbury.
One of those injured was airlifted to the North Staffordshire Hospital. Two others suffered minor injuries, the Ministry of Defence (MoD) said.
In a statement, the MoD added that there were two people in each of the helicopters and that a Board of Inquiry will now be held.
An RAF rescue helicopter attended (pic Tim Hargreaves)
The accident happened over a reserve landing ground the flying school uses.
West Midlands Ambulance Service spokesman, Murray MacGregor, said: "Despite the best efforts of the military personnel at the site and ambulance crews, there was simply nothing that could be done to save the man.
"The second occupant, a male in his 30s, was airlifted to the trauma unit at North Staffordshire Infirmary in Stoke where medics were on standby for his arrival. He has suffered facial fractures and a head injury.
"The military personnel in the second helicopter were less seriously hurt. One had a leg injury, while the other had lacerations to his arms and legs."
The Squirrel is a two-seat trainer helicopter, used to instruct pilots of all three armed services.
An MoD spokeswoman said one of the aircraft was from the Central Flying School and the other from 660 Squadron, but both were part of the Defence Helicopter Flying School.