The three National Guard members who were killed in a Wednesday night training exercise have been identified.

According to the New York National Guard, Chief Warrant Officer 5 Steven Skoda, Chief Warrant Officer 4 Christian Koch and Chief Warrant Officer 2 Daniel Prial died when their helicopter crashed in a farmer’s field in western New York.

The craft, a UH-60 Black Hawk medical evacuation helicopter, crashed about 6:30 p.m. in Mendon, a rural town south of Rochester, officials said.

The circumstances are still under investigation. The Federal Aviation Administration said it would take part, and the National Guard said Friday an Army safety investigation team from Fort Rucker, Ala., is also investigating.

Photos of the crash scene posted by local news media showed the aircraft wreckage burning on a snow-covered field.

The helicopter flew out of the Army Aviation Support Facility at Rochester International Airport, and was assigned to C Company of the 1st Battalion, 171st General Support Aviation Battalion, according to Eric Durr, public affairs director of the New York State Division of Military and Naval Affairs.

New York Gov. Andrew Cuomo said flags on state buildings would be lowered to half-staff on Thursday to pay tribute to the troops.

“National Guard members are our citizen soldiers who voluntarily serve and protect both here and abroad, and I extend prayers and condolences from all New Yorkers to the family, loved ones and fellow soldiers of these honorable heroes,” he said in a statement.

Monroe County Sheriff Todd Baxter said at a news conference that witnesses who called 911 reported hearing the sounds of an engine sputtering and said the aircraft was flying very low.

There were no survivors of the crash, he said.

Baxter called the three guard members who perished “great Americans.”

“Keep them in your minds and your prayers,” he said.