NCIS: Los Angeles is an American television series combining elements of the military drama and police procedural genres, which premiered on the CBS network on September 22, 2009.
NCIS: Los Angeles is the first spin-off of the successful series NCIS, itself a spinoff of another CBS series, JAG. On October 7, 2009, CBS gave the series a full-season pickup, extending the first season to 22 episodes. The season was extended again on November 4, 2009, when CBS announced its order for an additional two episodes.
Season 2 began airing on September 21, 2010. On May 18, 2011, CBS renewed the series for a third season. On August 18, 2011, CBS announced that the series would crossover by having Daniela Ruah guest star as Kensi Blye on Hawaii Five-0. On January 11, 2012, CBS announced that the series would do a second crossover with Hawaii Five-0 by having Daniel Dae Kim and Scott Caan guest star on an episode in May which occurred in May 2012 with the Hawaii Five-0 Season 2 episode "Pa Make Loa" and the NCIS: Los Angeles Season 3 episode "Touch of Death".