There are a lot of ways he could answer that and he thinks them all through when he regards her. He's not sure what he wants to tell her - it's true that she's told him a lot lately, both the past minutes and the past few months, but ... well, he'll always be reluctant to share all the details.

Everything that troubles him remains his problems, and his faults, and it'll take something more than a general question to get him to talk about it.

"I'm an agent with the FBI. It goes with the job."

The answer is something of a compromise. It's very true that what he sees while on the job tends to get to him more often than it doesn't - but the way he looks a little guarded probably makes it clear that there's more to the story than that.