Descendants of Sacagawea will be on hand Saturday as a Navy resupply ship bearing the Indian guide's name will be christened and launched into a bay. "This is a very humbling experience, not just for our family but for the whole tribe," said Rod Ariwite Sr. of Pocatello, Idaho, a descendant of Sacagawea and member of the Shoshone people. "This ship will be out there carrying Sacagawea's name long after I am gone." The Sacagawea will carry a crew of 172 and has the largest flight deck in the Military Sealift Command's Naval Fleet Auxiliary. The 41,000-ton vessel also is...