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Hundreds of U.S. military personnel helping provide relief in Nepal after last month's 7.8 earthquake have finished their mission and will leave the country, U.S. and Nepali military officials said on Wednesday. The announcement comes less than a week after the bodies of six U.S. Marines and two Nepali soldiers were recovered from the wreckage of a U.S. military helicopter that crashed in the mountains of Nepal during an aid mission after the quake. Officials said 300 U.S. Army, Air Force and Marine personnel would start to leave Nepal on Thursday, having completed their rescue and immediate relief operation.