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Story highlights

NEW: Loved ones report three Marines missing; CNN affiliate reports a fourth

Crews search wreckage seven miles offshore between Mokule'ia Beach and Turtle Bay

"It is very difficult to find things right now," Coast Guard says of weather during search

CNN —  

Crews are searching for 12 Marines missing at sea after two CH-53 helicopters apparently collided during an overnight training flight off the Hawaiian island of Oahu, authorities said.

Personnel from the U.S. Coast Guard, Navy, and Honolulu Fire Department looked for survivors seven miles offshore in increasingly poor weather conditions. Swells reached 16 feet, surf rose to 40 feet and visibility extended to only one mile, the Coast Guard said.

“The weather is making it very difficult,” Coast Guard spokesman Lt. Scott Carr told reporters. “It is very difficult to find things right now.

“Our goal is to find survivors,” he said.

Loved ones of missing

Orlando’s family asked for prayers for him and the other missing Marines. “We would like to thank everyone who continues to pray and send their expressions of concern and love for the safe return of United States Marine Corps Cpl. Christopher Orlando and his fellow Marines,” they said.

The family of Captain Kevin Roche told CNN that he is among the 12 Marines missing in the Hawaii helicopters collision.
Family of Kevin Roche/Family of Kevin Roche
The family of Captain Kevin Roche told CNN that he is among the 12 Marines missing in the Hawaii helicopters collision.

Roche’s family described him as a passionate Marine. “We believe the Marines and Coast Guard are doing everything they can to bring Kevin and his fellow Marines home safely and we are grateful to everyone involved in the rescue,” they said in a statement.

“We believe the Marines and Coast Guard are doing everything they can to bring Kevin and his fellow Marines home safely and we are grateful to everyone involved in the rescue,” Roche’s family said in a statement.

Loved ones have reported Maj. Shawn Campbell and Cpl. Matthew Drown missing after the Hawaii helicopter crash.
KPRC
Loved ones have reported Maj. Shawn Campbell and Cpl. Matthew Drown missing after the Hawaii helicopter crash.

Campbell’s mother, Donna McGrew, said a Marine officer visited her at home to brief her. Campbell has a wife and four children, and has done three tours of duty in the Middle East.

“My heart just breaks; there are 11 other families going through this now. God bless them,” McGrew said.

Another Texan, Cpl. Matthew Drown, was on board one of the helicopters and is missing, his brother Sean Drown told CNN.

Cpl. Drown, 23, has been in the Marines for five years, and joined shortly after high school.

CNN affiliate WFXT reported that one Marine from Hingham, Massachusetts, went missing in the chopper exercise.

Surfers beware

The search is taking place off the north shore of Oahu, a popular surfing destination. Surfers should avoid any debris in the water, Carr said. Searchers have already spotted floating pieces of debris consistent with military aircraft.

“The Coast Guard is asking that people use extreme caution along the coastal area surrounding the wreckage site which stretches from Mokule’ia Beach to Turtle Bay,” Carr said in a statement.

“We are urging people to stay out of the water and off the beaches due to debris that could pose potential risk and cause serious bodily harm,” he added.

Marine Commandant Gen. Robert B. Neller expressed hope.

“Thoughts & prayers are with our Marines & their families in Hawaii as search efforts continue. We remain Semper Fidelis,” Neller tweeted.

Earlier, searchers spotted a fire and debris field, including an empty life raft, about 2½ miles north of Haleiwa Beach, according to Coast Guard Chief Petty Officer Sara Mooers.

The two helicopters were believed to have collided late Thursday, Mooers said. The Coast Guard received notice at 11:38 p.m. local time.

The two aircraft apparently didn’t issue a mayday call, Carr said.

Rather, a civilian on the beach first notified authorities of seeing a fireball, followed by a second person reporting a flare, Carr said.

A Marine Corps CH-53E Super Stallion
US Marines
A Marine Corps CH-53E Super Stallion

Marine officials contacted the Coast Guard about the missing aircraft around 11 p.m. (4 a.m. Friday ET), Mooers said. A Coast Guard helicopter arrived shortly after midnight (5 a.m. ET), according to the agency.

CNN affiliate KHON in Hawaii reported that witnesses said they heard a loud boom over the water and saw a flash in the sky.

Six people were on board each of the two heavy-lift transport helicopters, according to Mooers.

The missing aircraft are assigned to Marine Heavy Helicopter Squadron 463, Marine Aircraft Group 24, 1st Marine Aircraft Wing, the Marines tweeted.

According to the unit’s website, it is stationed at Marine Corps Naval Air Station Kaneohe Bay, on the opposite side of the island from where the apparent collision occurred.

Participating in the search Friday were two Navy warships, Coast Guard Cutters Ahi and Kiska, a MH-65 Dolphin helicopter, a HC-130 Hercules airplane, a MH-60 helicopter, Honolulu Fire Department crews, and a helicopter rescue boat, officials said.

A high surf advisory is in effect for the north facing shore of Oahu where the search is being conducted, authorities said.

The Marine Corps are investigating the cause of the accident.

CNN’s Dave Alsup, Barbara Starr, Michael Pearson contributed to this report.