Edmontonians turned a quizzical eye to the sky on Tuesday, when several American military helicopters were buzzing over the city.

Maj. Gen. Jon Jensen, the adjutant general of the Minnesota National Guard, said in a tweet: “Our Minnesota National Guard family is devastated by the deaths of these soldiers. Our priority right now is ensuring that our families are taken care of.”

U.S. Coast Guard and military crews are searching the ocean off Hawaii for five crew members of an Army helicopter that reportedly went down during a training exercise, authorities said Wednesday.