Authors Doug L. Hoffman and Allen Simmons both have strong backgrounds in science and computer modeling. Hoffman has a PhD in Computer Science from the U. of North Carolina where he did research in Molecular Dynamics Simulations and high-speed comparison methods for RNA, DNA and protein sequences. Currently he serves as senior grid architect for a major IP company and as an adjunct Professor of Computer Science at U. of Central Arkansas and Hendrix College. Simmons has a BSEE from U. of Miami and wrote the computer systems software for the world¿s first weather satellites-TIROS-Television/Infra-Red Observation Satellite. After TIROS, he spent 12 years working with scientists and engineers on NIMBUS weather satellites which collected meteorological, atmospheric, geological, and oceanographic data. NIMBUS had a profound impact on knowledge of Earth¿s dynamic behavior. On the island of St. Croix, USVI, Simmons and Hoffman developed a computer system to track objects at great ocean depths.