It all started in a bar in Costa Rica. That's where Marissa Fayer, a medical engineer, learned that women were dying of breast cancer at an alarming rate in the country's remote regions. "I knew I had to do something. I knew I was in a position to do something. I knew I was fortunate enough to have access to high-tech medical equipment." She just had to figure out how she could save these women's lives, not just in Costa Rica, but around the world.