By NPR People: Lourdes Garcia-Navarro 7 Mar -- It's wet and windy day in Shilo, a Jewish settlement in the central part of the West Bank that has about 10,000 residents. In addition to the settlers, there are a few extra people staying in Shilo on this day. They are Christian volunteers from the U.S. who have spent the morning pruning the grape vines. Now, with a winter storm beating down on the hills, the volunteers are stomping with their mud-splattered boots and North Face rain gear. "We don't bring people here that are expecting mud baths and skin treatments and things like that," says Tommy Waller, a large 50-year-old man with a big smile and a prophet's long beard, who hails from Franklin, Tenn. Waller founded HaYovel, a nonprofit group that brings Christians to what his website calls "the mountains of Israel where prophesy meets reality."... It's a hugely emotional issue for the Christians who come. They believe it is their duty to help Jews expand their control over Judea and Samaria — the biblical names for what is now the Israeli-occupied West Bank ... For the settlers, the presence of the Christian workers has more practical applications.