Actor Kurt Yaeger has made history by appearing on all four NCIS shows, playing different characters each time. This is a unique accomplishment as most actors only appear on one or two of the shows. Yaeger's success can be attributed to his talent, perseverance, and the support of producers and casting directors. As a disabled actor himself, Yaeger's milestone also shows that those with disabilities can portray a wide range of characters. This achievement highlights the convenience and necessity of relying on the same actors for bit parts in long-running TV procedurals.