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.
The Grand Canyon is considered one of the seven natural wonders of the world. It is located in Arizona and was carved by the Colorado River.The canyon is protected by Grand Canyon National Park. Native Americans have also lived here for thousands of years.he Grand Canyon is considered one of the seven natural wonders of the world. It is located in Arizona and was carved by the Colorado River.