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.
Natural Bridge State Resort Park is home to the great natural sandstone arch that stands like a sentinel over this mountain hideaway. Located in the midst of the Daniel Boone National Forest, near the Red River Gorge Geological Area, the arch spans 78 feet in length and 65 feet in height.