[Harmless Teddy Bear]

It's a valid question.

Only if you are three years old or abysmally ignorant.

Which are you?

How does she hear emergency vehicles?

The flashing lights on top of emergency vehicles are not just for fun. They are there so people who can not hear the siren, whether they are deaf or just have their stupid music on so loud people are singing along three counties away, will have a visual clue.

[Mr.Unique]

Nope. It's perfectly valid set of questions that could have been answered without all the drama.

I'm not sure why you and your buddy are so sensitive to questions.