Choice of neighborhood was deliberate.

街区选择也经过深思熟虑
Neighbors around here are used to hearing gunfire.

周围的街坊经常听到枪声
They'll blame it on the gangs, and so will the police.

他们会认为是帮派所为警察也会那么想
Techs have gone over this frame by frame.

技术人员已经逐帧检查过录像
There's no way to identify the shooter.

但无法辨认枪手
Approximate height and weight, that's about all we got.

只知道大致的身高体重
The unsub's face isn't the only way to identify him.

面貌并非辨认嫌犯的唯一办法
We also look at specific behavioral traits.

还需要找寻特殊的行为特征
These are the reasons you don't believe it's a gang?

所以你们不认为是帮派所为吗
The shooter established what we call a signature,

枪手的行为具有某种标志性
something he did during the murders that wasn't actually necessary.

在谋杀时他的一些行为其实并不必要
Not part of his M.O., but identical in every attack.

不算作案手法但在每次袭击中都一样