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.
Delicate Arch. Delicate Arch is 60-foot-tall (18 m) freestanding natural arch located in Arches National Park near Moab, Utah, USA. It is the most widely recognized landmark in Arches National Park and is depicted on Utah license plates and on a postage stamp commemorating Utah's centennial anniversary of admission to the Union in 1996.