Transcript for Search for Missing US Helicopter in Nepal Intensifies
Now to the desperate search for a U.S. Military helicopter missing in Nepal. It was on a mission to help earthquake victims with six mar reen -- Marines on board. Reporter: These are anxious hours for the Marine Corps and the families. Two days since those Marines and their colleagues disappeared after reporting fuel issues on board that aircraft. And still, no sign of them. This morning, at first light, the search for thing U.S. Helicopter intensifies as the hours pass. Akroosz this incredibly rugged terrain, eight helicopters, a drone, and a battalion of Nepalese soldiers all searching. Trying to catch any kind of signal if the chopper erchopper's emergency beacon. Crew members vould would have had their own survival beacons. So far, nothing. Sat frequencies sometimes can be hard to get out on a sat com radio when your in the mountains. Reporter: Hours after they wept missing, Ronald norgren posted that our son Chris was F flying the helicopter that is now missing in pal. One hopeful sign. No smoke airys or burn areas in those valleys. Some of that terrain is so inaccessible, it can only be reached on foot. And so the search and those prayers continue. Amy? Indeed they do. Terry Moran, thank you so much.
This transcript has been automatically generated and may not be 100% accurate.