David Herrera is a US Army combat Vietnam veteran raised in Texas, Arizona, and California. He obtained a Bachelor Degree in mathematics at Cal Poly, Pomona, and a Master’s Degree in Industrial and...lihat lebih banyakDavid Herrera is a US Army combat Vietnam veteran raised in Texas, Arizona, and California. He obtained a Bachelor Degree in mathematics at Cal Poly, Pomona, and a Master’s Degree in Industrial and Systems Engineering from the University of Arizona. He worked as a software/quality engineer for 35 years.lihat lebih sedikit