Melissa Penn and Adam Stengel of New York City have a son, Zak, who has hemophilia.
When they contacted Zak's nursery school in Manhattan, the Saul and Carole Zabar Nursery School at the Jewish Community Center, about hosting a walk-a-thon to raise money for the National Hemophilia Foundation (NHF), the center wholeheartedly supported the cause.

On Sunday, June 4th children and their parents showed up in droves to register for the "Kids Who Care" walk-a-thon in Riverside Park, along the Hudson River. Kids of all ages who completed the walk received a winner's medal at the finish line, where they were treated to fresh fruit, juice and bagels. Silly Billy the clown then entertained the families with a magic show in the park.

The event raised more than $10,000 for NHF. Baxter Healthcare provided the food, drinks, t-shirts and balloons for the event.