Providing temporary use of non-downloadable computer software and software as a service (SAAS) services for physics-based and virtual modeling and simulations, advanced diagnostics, predictive prognostics, systems health monitoring and analyzing, predicting, modeling, prognosticating and managing the health of critical systems and machinery, for use in the military, medical industry and aerospace industry, and for machine component fault analysis and failure mode identification, for use in the military, medical industry and aerospace industry; computer software consultation and research and development of computer software in the fields of physics-based modeling and simulations, advanced diagnostics, predictive prognostics, systems health monitoring, and analyzing, predicting, modeling, prognosticating and managing the health of critical systems and machinery, machine component fault analysis and failure mode identification for military, medical industry and aerospace industry; engineering and product testing in the field of physics-based modeling and simulations, advanced diagnostics, predictive prognostics, systems health monitoring, and analyzing, predicting, modeling, prognosticating and managing the health of critical systems and machinery, machine component fault analysis and failure mode identification for military, medical industry and aerospace industry