Two US Army HH-60 Black Hawk helicopters collided during a training mission over Kentucky.
The incident occurred on Wednesday, and fatalities are expected, according to Governor Andy Beshear.
The status of the crew members is unknown.
Kentucky State Police and emergency division have been deployed to respond to the crash.
An investigation has been launched to look into the details of the crash.
The helicopters were from the 101 Airborne Division based in Fort Campbell.
The HH-60 helicopters are versatile flying machines used by the military for various purposes.
The crash is a tragic incident that has resulted in several casualties.
The governor of Kentucky has requested people to pray for those affected by the crash.
The incident is a reminder of the risks involved in military training missions.