JACKSON, Mo. (KBSI) — Four Jackson High School cheerleaders signed Wednesday to continue their a thletic careers at the collegiate level, marking what coaches say is another milestone in the continued growth of Jackson’s cheer program. Seniors Ava Weber, Brinleigh Rau and Abe Blackburn signed to cheer at Southeast Missouri State University, while Landyn McClanahan signed with Lindenwood University. For longtime coach Jana Scott, the moment repre…