Rough Seas Hinder Search for 12 Marines Missing in Hawaii

The Marines were participation in nighttime training exercises when their helicopters crashed.
1:40 | 01/17/16

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Transcript for Rough Seas Hinder Search for 12 Marines Missing in Hawaii
And back to Hawaii and the search for 12 Marines misses off the coast of oahu. They were on a night time training exercise in two of the military's biggest helicopter like this one there. The crash causing a boom so powerful, it wases felt miles away on shore. Now, the dangerous conditions. Aditi Roy reporting in tonight. Reporter: The search for 12 missing Marines now in full force for a second day. Dozens of rescuers from the coast guard, Navy, and police department looking for survivors from two helicopters believed to have collided in midair. From the north end to the south end of the island, we have folks involved. Reporter: Witnesses saying the crash lit up the sky. It just seemed like a flare had been deployed from an aircraft. Reporter: There have been a series of Marine Corps helicopter accidents in the last year. The highest number of fatalities in at least five years. Any time you have this number of mishaps in a row, you have to step back, take a look, what are you doing wrong? Is it training, the airplanes? The way they are being operated? Reporter: Tonight, the images of those missing, including major SHAWN Campbell a father of four from Texas. And 21 Ty hart from Oregon. I will not give up hope unless I'm told to. Because I know how strong he is. It's not just our son. There's 12 of them. Reporter: As those families anxiously await news, officials say they will monitor the radios through the night and battling the rough surf again tomorrow. Thank you. From the rough conditions in

This transcript has been automatically generated and may not be 100% accurate.

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