NCIS, Season 9

[in Autopsy]

Gibbs:
[re: Captain Wallace] Doin' a little street fighting.

Ducky:
Presumably he took his role as a vigilante quite seriously.

Gibbs:
Come on, Duck.

Ducky:
[chuckles] I take it you do not approve.

Gibbs:
Duck, it's not their job, they could get hurt.

Ducky:
Jethro, most of them already have been. Aside from their love of comic books, what most of these crime fighters have in common is being victims of violent crime themselves, or abuse, or tragedy. I mean, take a look at Captain Wallace. [shows Gibbs a file] His wife died in childbirth, and then his daughter died when a balcony collapsed in a shopping mall.

Gibbs:
McGee said his specialty was building code violations.

Ducky:
It's hardly a coincidence. Whereas others might have succumbed to depression, or drug abuse, these men and women have channeled their angst into something positive. Who's to judge?