The founders of CAC2 first met together in 2011 to explore ways the community could work together to raise awareness and collaborate, without duplicating the efforts of existing organizations. This grassroots movement brought together representatives of small, medium- sized, and large organizations and committed individuals who fight childhood cancer and provide support to the children and families affected by the disease. The hope was that by working together we could bridge some of the natural fragmentation that arises from having a diverse community of passionate advocates. Much of the strength of the community comes from the many different groups and individuals who have joined the fight. However, with greater cooperation among participants, more coordinated action, and higher levels of collaboration, we can make more progress, faster. CAC2 hopes the childhood cancer community will benefit from greater levels of coordinated action that: (1) leverage the unique strengths of the members, (2) minimize waste of precious resources and expertise, and (3) drive better outcomes for patients and their families. The primary values underlying CAC2 are to put the children and their families first in everything we do and to support organizations active in the fight against childhood cancer. We will support, not compete with, our member organizations and the childhood cancer community through action-oriented, member-directed projects.