Immediately after asking that question, Levi regretted it - and David hadn't even started speaking! Probably should have thought it through, really. You're supposed to ask questions like that [i]after[/i] leaving the dangerous place you're asking a question about.why exactly a place could cause a fate worse than death. He believed the saying was, 'if it ain't broke, don't fix it.' Doing his best to ignore David's story about love and loss pr whatever, Levi kept sticking one foot in front of the other before, as if on cue, a horrific scream of terror reverberated throughout the area. 

[b][i]"JESUS H. CHRIST!!!"[/i][/b]

Levi nearly had a friggin' heart attack! Where the [i]fuck[/i] did that scream come from! The Vault Dweller removed a grenade and tossed it in the general direction of whatever the hell just decided to make him nearly piss himself in terror. Whether he did it from fright or anger didn't matter at this point, he just wanted to relieve the tension and hopefully drop whatever made this place as frightening as it was. 

"So! Instead of, y'know, [i]walking[/i], why don't we make haste and run? I like that idea!" Levi suggested hopefully, completely and complacently following Sarah's urging forward.