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 two 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 two episode "Pa Make Loa" and the NCIS: Los Angeles season three episode "Touch of Death".