'NCIS' Shocker: Rocky Carroll Tells All on His Unexpected [SPOILER] and Playing Director Vance for Nearly Two Decades Sources: 2 articles'NCIS' Shocker As Veteran Cast Member Exits In Series' 500th Episode (Deadline)'NCIS' Shocker: Rocky Carroll Tells All on His Unexpected [SPOILER] and Playing Director Vance for Nearly Two Decades (Variety)