9 US soldiers were killed in a collision between two helicopters during a training exercise. The crash is the deadliest in eight years involving a Black Hawk variant designed for medical evacuation. News AP.

The accident happened during training in the state of Kentucky on Thursday night.

Brigadier General John Lubas said two helicopters collided on an open field during a routine exercise. One vehicle had 5 soldiers and the other had 4 soldiers. All of them were killed on the spot.

Kentucky Governor Andy Bessier expressed grief over the incident. US Defense Secretary Lloyd Austin also expressed his condolences. In a statement, he said, we are sorry for this tragic loss.