The hit CBS show NCIS recently re-aired its triple crossover episode, much to the delight of fans. The crossover involved three different shows - NCIS, NCIS: LA, and NCIS: Hawaii - and was filled with drama. Fans have been enjoying watching the episode again and have been expressing their excitement on social media. Some fans are curious about the identity of Simon Williams, a character mentioned in the episode. It is revealed that Simon Williams is actually an assassination program created by the CIA. Fans were also excited to hear an audio cameo from Hetty Lange, played by Linda Hunt.