電磁 でんじ 爆弾 ばくだんじゃありませんでした
denjihabakudanjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 電磁波爆弾

1. It was not an electromagnetic pulse bomb.; It wasn't an EMP.

Past/Perfective
Negative
Polite
Terminal Form