"Oh, great. I'm so glad you found me, then." A relative lack of seriousness, on the whole, seemed a better response than remaining stone-cold sober. That seemed more likely than anything to just encourage the man.

"I shot people, did my best not to get shot back, guarded my commander, and died in a cataclysmic explosion." His whole life in a single sentence. To him it was rather comforting, really. Relative to whatever level of comfortableness could be obtained when talking to a confusing stranger.