It really irks me when U.S. government agencies use metric measurements in official documents and public announcements. The metric system may be fine for practical use in science, but it doesn't communicate to a population that doesn't use it.
Most Americans don't know a kilometer from a furlong, and can't readily visualize those distances.
While I do understand your frustration because I have felt the pinch myself, the metric system has been actively and voluntarily used in the scientific community for decades, by the American military since before WWII and in some American sporting events since the 1960s.