Sometimes you just have to have your camera ready.  Have you ever seen the now famous photograph by Robert Doisneau of called "The Kiss at the Hotel Deville"?  It is a great black and white shot of two lovers kissing on the street near some patio tables.  

You can see cars whizzing by and the people hurrying along the side walk.  The shot is a little busy, not really composed well and it is under exposed...but what a shot!  It captures so much emotion.  What I am saying is that a great shot does not have to be planned out, researched, and perfect.  You just have to be in the right place at the right time to capture a great moment.

That is what happened when I captured this one.  

The day was ending and the sun was headed home for the night.  We had been exploring Switzerland all day long and were headed to find the car so we can drive back to the town we were staying.  I had my camera hanging around my neck and noticed these two children walking in front of us.  I quickly set the exposure and took several shots while I was walking behind them.  You never know when these kind of "street shots" are going to work out.  This is one of my favorites of all time.