RPM is the acronym used for revolutions per minute. It measures the number of revolutions completed in one minute around a fixed axis, giving the speed of a mechanical component. It is commonly used to describe the performance of automobile engines.
Like most ballparks built from the 1990s onward, Safeco Field is a 'retro-modern' style ballpark that incorporates many of the features of ballparks built in the 1950s and earlier with modern amenities.
The town of Waco was built around the Waco Suspension Bridge, which was a crucial crossing of the Brazos River upon completion in 1870. Today, downtown Waco is relatively small when compared to other larger Texas cities, such as Houston, Dallas, San Antonio, or even Fort Worth, El Paso, or Austin.