In this photo released by the U.S. Army, AH-64D Apache Longbow attack helicopters from the 1st Attack Battalion, 25th Aviation Regiment, fly over a mountain range near Fort Wainwright, Alaska, on June 3, 2019. The U.S. Army says two helicopters similar to these crashed on Thursday near Healy, Alaska, killing three soldiers and injuring a fourth. Cameron Roxberry/U.S. Army via AP hide caption
Japan's Prime Minister Fumio Kishida (right) meets with reporters in Tokyo after an army helicopter went missing on Thursday. Kyodo News via AP hide caption
Emergency responders are seen near a site where two military helicopters crashed Wednesday night during a routine training mission in Trigg County, in southwestern Kentucky, on March 30, 2023. Brandon Smith/AP hide caption
Danny Randolph (left) and Daniel Wadham, chief warrant officers in the Tennessee National Guard, were killed in a Black Hawk helicopter crash during a training flight in Alabama's Madison County on Wednesday. Tennessee National Guard hide caption
A helicopter flies in Brazil in 2014. Some helicopter trips — like personal or private helicopter rides — are more likely than others to end in a fatal accident. Warren Little/Getty Images hide caption
Students sit in an open area after their school was evacuated in Veracruz, Mexico, on Friday, after a magnitude 7.2 earthquake. Later Friday, 13 people died after a helicopter surveying the damage near the epicenter crashed. Felix Marquez/AP hide caption
A sightseeing helicopter carrying seven went down in the Grand Canyon Saturday, killing three people and critically injuring the others. Julie Jacobson/AP hide caption
A firefighter walks toward some of the wreckage at the scene of today's helicopter crash in London. Andy Rain/EPA /LANDOV hide caption