"Citizens for a Strong America" Operates out of a UPS Mail Drop but Runs Expensive Ads in Supreme Court Race?

Koch backed group funds an TV ad attack on JoAnne Klopenburg in the Supreme Court battle in Wisconsin. The pivotal election will be held on Tuesday.
http://www.prwatch.org/news/2011/04/10534/group-called-citizens-strong-america-operates-out-ups-mail-drop-runs-expensive-ad