Share: Former sergeant and now chemical engineering major Mark Castanon is leading the Veterans Club on an operation to raise funds and awareness for a clinic that all former soldiers in the San Gabriel Valley will be able to benefit from. After leaving the Army two years ago, Castanon wandered on to campus and began adjusting to new life as a civilian. His leadership instincts led him to yet another team on another mission. The mission was to bring forward the important problem of inadequate …