A US military MH-47 Chinook crashed in Syria earlier this week, injuring 22 soldiers.
It's the latest helicopter in a string of crashes during non-combat missions to result in casualties.
Three other crashes involving US military aircraft this year have killed 14 troops.
The Chinook accident followed several previous helicopter crashes earlier this year, which eventually forced the US Army to temporarily ground its aircraft except those participating in critical missions.
UH-60 Black Hawk helicopter Idaho National GuardIn one mid-February incident, two Tennessee Army National Guard pilots were killed when their UH-60 Black Hawk helicopter crashed during a training flight in Alabama.
Persons:
—, Sabrina Singh, Singh, James McConville, McConville
Organizations:
Service, Central Command, Pentagon, Defense, US Army, UH, Hawk, Guard, Tennessee Army National Guard, Tennessee's Department, Apache, CNN
Locations:
Syria, CENTCOM's, East, Central, South Asia, Alabama, Kentucky, Alaska