G. Callen's Best Moment In NCIS: Los Angeles Season 3

Compared to Agent Callen's near-fatal mistake in the Season 3 premiere, his impulsive decision at the end of "Sans Voir (Part II)" came as a shock. After a deadly series of mind games with the Chameleon, which resulted in the deaths of two NCIS agents, Callen goes rogue and executes the unarmed killer in broad daylight with a crowd of onlookers, a television crew, and police as witnesses.

The episode ends with LAPD arresting Callen, and it seems like his career is over as a result of this revenge killing. However, as "NCIS" fans already know, the Chameleon was put in a bulletproof vest so they could publicly fake his death to push further into ongoing investigations he was connected to.

Callen going along with this plan is a huge power move, as he could've lost everything he worked for had anything gone wrong. Additionally, his rivalry with the Chameleon carries on for several seasons after this incident, and when given a chance to kill him, Callen chooses not to. Instead, he sends the man to prison and redeems himself from this noteworthy Season 3 moment.