Enlisted personnel are identified by way of their various 'E' grades ranging from E-1 to E-9. For those service branches recognizing a Warrant Officer rank, 'W' grades range from W-1 to W-5. Likewise Officers are scaled from O-1 to O-10.
China has quite a collection of natural bridges, including one that experts say has the longest span of any natural bridge in the world. The Fairy Bridge (Xianren Qiao), in southwestern China's Guangxi Zhuang Autonomous Region near the border with Vietnam, has a 400-foot span.
Distance: 471 miles. Approximate time: 7.5 hours. Arches contains some of the countryâs most amazing natural wondersâmammoth rocks and arches formed from erosion. Perhaps one of the most important facts about Arches is that the park is constantly evolving.