One New York City heliport is banning doors-off helicopter tours.
Authorities said the identities of the two soldiers will be released after their next of kin are notified.
The government of Djibouti asked the U.S. to pause its air operations there after two incidents Tuesday.
The U.S. Air Force has confirmed the Thunderbird pilot who crashed Wednesday morning in Nevada has died.
The U.S. Air Force said one of its F-16s crashed in Nevada on Wednesday after Tuesday's two Marine crashes.
A CH-53E Super Stallion helicopter crashed in Southern California while out on a routine training mission.
Military officials said Thursday night a U.S. military helicopter had crashed in western Iraq, though it's not clear how it happened.
The pilot was able to free himself and was the only survivor, according to the New York City Fire Department.
At least 13 people are dead after a helicopter that was surveying the earthquake damage crashed.
It's still not clear what caused the crash.
A helicopter crashed into a Newport Beach home Tuesday, killing at least three people, KABC reported.