[csunbird]

One would expect the electrocution risk would be enough to deter the human attackers.

[lsaferite]

A sniper team with an anti-material rifle could wreak havoc very effectively and never even be noticed while doing so.

[mschuster91]

That's the thing with high powered guns, you don't need to get near enough to be electrocuted. Snipers are even better but take more skilled attackers and are harder to explain away in a random traffic spot.