Nikita nodded a little grimly, but also understandingly. She knew exactly what he was talking about and he definitely didn't need to say the words. In fact, it was better if he didn't, even though both of them were speaking in a way that didn't carry.

Yet another element of training that they had in common.

"Wet sponges attached to car batteries," she said conversationally, since that was the most memorable of her experiences. Well, other than the rats, but she didn't tell anyone about the rats. Ever.