Actually, it was in Long Beach (close to Los Angeles), and it was ICE Agent on ICE Agent.
From CBS2 News,
A workplace encounter turned deadly when a U.S. Immigration and Customs Enforcement agent turned a gun on his boss after he threatened disciplinary action at the Long Beach Federal Building Thursday evening.
During a press conference held by the FBI and ICE, officials said the incident began when an ICE supervisor called in an agent to discuss disciplinary action. The agent responded by shooting his superior. Another employee intervened and shot the gunman, who died at the scene.
Why is this important?
In the debate regarding the 2nd Amendment and private ownership of firearms it is often argued, from anti-2nd Amendment apologists, that we the people should only trust firearm ownership and possession to "those qualified" - i.e., law enforcement. The fly in the ointment with such "reasoning" is that law enforcement personnel are human and, as such, are subject to the same failings as the rest of us regular folk.
While incidents such as this one should not be used to broadbrush paint all law enforcement officers as derelict, we need to remember that responsible firearm ownership and possession is by no means limited to their domain. As such, we should also remember that private citizens in the United States are guaranteed the right to keep and bear arms.
Another point to take away from this story, particularly with regards to the use of firearms in the act of self-defense, can be found from this L.A. Times excerpt,
Kevin Kozak, 51, a second-in-command of ICE in Los Angeles, suffered six gunshot wounds to his legs, upper torso and hands. Authorities identified the shooter as Ezequiel Garcia, 45, a supervisory agent, who was shot to death by another supervisor in the office after wounding Kozak.
The victim was shot six times yet was, as an article elsewhere states, "awake and lucid."
Private citizens who keep firearms for self-defense need to always be cognizant of the fact that an attacker may not be stopped when hit by only one or two bullets - unlike what is typically portrayed on TV or in the movies. If forced to use a firearm for self-defense, per all competent trainers, you never shoot to kill, you shoot to stop (the attack). However, be aware that it may take multiple shots on the assailant to stop him from harming you or your loved ones.
As with any form of self-defense you may choose to use, training and preparation are key.