We all have our reasons for donating blood that finally compel us to schedule an appointment. Whidbey Island's Natasha Vanderlinden had to overcome her significant fear of needles but as host John Yeager tells us in this episode of "Bloodworks 101," once she overcame that fear, you'll never guess what happened. Natasha's story didn't happen overnight. It would play out over 20 years. And little did she know that it would begin on one of the most horrific days in American history, September 11th. 2001.