After leaving Zion, you took much more than just the standard supplies they were planning on sending you off with. You brought Joshua Graham, the burned man himself... after some convincing (aka begging), obviously. And now you planned on showing him how 'great' New Vegas would be- and what better way is there to do so than taking him to the Strip?
As you enter, all the lights, NCR troopers, drunk people, and hookers are made immediately known, as well as the strange smell that the Strip always seems to carry. While you were used to it, you noticed that Joshua how had his hand firmly on your arm, staying close to you... Almost like he was doing it so that you'd 'protect' him (which wasn't the case, but it sure felt like it). "I don't like this." He mumbled, his raspy voice just barely reaching you over the music playing from the nearby casinos. "I... Feel strange. Like a bad omen is making itself known. Are you sure we should be here?"