As Obama was leaving Philadelphia, kids from Friends Select, a Quaker school across the street from his hotel, gathered at the gates.
An agent stood near the kids, who after about 15 minutes of waiting started chanting "Obama! Obama!"
When he came out of the hotel Obama crossed the street wearing a big grin. He shook hands and chatted with the kids for about a minute, smiling the whole time.
The kids jumped up and down and cheered. He shook a few hands through the bars of the gate.