Season 1 of National Security Agent premiered on January 1, 1999.

Season 2 of National Security Agent premiered on May 12, 2000.

Season 3 of National Security Agent premiered on December 31, 2000.

Season 4 of National Security Agent premiered on May 15, 2004.

Season 5 of National Security Agent premiered on October 2, 2004.

Season 6 of National Security Agent premiered on March 28, 2022.