Here is what I did: Although I normally use the viewfinder, I switched my camera into "Live View Mode" so I could see the action through my LCD. Here is a little guide from Canon about how to do this. I was able to hold my camera at almost waist height, while framing my composition by glancing down at it. I made it seem like I was just fiddling with settings while I was carefully composing the shot. I knew I only had one chance because he was close enough to hear if I went paparazzi on him with a bunch of exposures!
We were both waiting for someone at the time, and we didn't say anything to each other, but we were so connected in that moment. It was some serious humanity connection. This is why I love Travel Photography.