The five U.S. Marines aboard a helicopter that went missing on a trip from Nevada to California were confirmed dead on Thursday.

First responders found the crashed CH-53E Super Stallion helicopter following hours of searching on Wednesday, but they did not find the crew until Thursday morning.

"It is with a heavy heart and profound sadness that I share the loss of five outstanding Marines from the 3rd Marine Aircraft Wing and the "Flying Tigers" while conducting a training flight last night," Maj. Gen. Borgschulte, Commanding General for the 3rd Marine Aircraft Wing, said in a statement.

"These pilots and crew members were serving a calling greater than self and were proud to do so. We will forever be grateful for their call to duty and selfless service," he added. "To the families of our fallen Marines, we send our deepest condolences and commit to ensuring your support and care during this incredibly difficult time."

The U.S. military does not reveal the identities of deceased service members until at least 24 hours after all next-of-kin notifications have been made.