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.
Title: St. Louis Arch â Gateway to the West Objective: Real world Quadratic! Imagine a building that stands more than 600 feet tall and can be modeled by a math equation! Lets get started: Two video clips are provided. One of which gives background as to âwhyâ the St. Louis Arch was imagined and then built. This video lasts 4 minutes.