Welcome to the inaugural edition of the Navigator, the bulletin of the Naval Oceanographic Office (NAVO) Major Shared Resource Center (MSRC). We intend to publish this bulletin semi-annually and hope that you find it informative and enjoyable. Fiscal year 1999 has seen significant change and progress for the NAVO MSRC and the Department of Defense (DoD) High Performance Computing (HPC) Modernization Program (HPCMP). All MSRCs are completing the first round of Performance Level 3 (PL3) enhancements to their computational, mass storage, visualization, and networking environments. Here at NAVO MSRC, we are emphasizing resiliency, performance, and security in all aspects of those PL3 upgrades. Our Defense Research and Engineering Network (DREN) connectivity is being upgraded to OC-12 speed (i.e., 622 megabits/second), creating new opportunities to explore and field improved HPC environments for larger, more dispersed user communities. We have successfully completed full implementation of several DoD-mandated security initiatives, dramatically improving the information security posture for this MSRC and the entire HPCMP. Programming Environment and Training (PET) initiatives, including metacomputing and shared storage efforts among the MSRCs and Distributed Centers (DCs), will soon yield tangible improvements in the HPC capabilities we provide to DoD scientists and engineers. As a result of these 1999 initiatives, users will see a corresponding improvement in our ability to more effectively support a diverse mix of Research and Development (R&D) (both challenge and non-challenge) and time-critical operational processing. Finally, we've completed the rigorous preparations and certifications that we believe are needed to adequately prepare for the much-publicized Year 2000 date problem. All of these initiatives support the most important resource within the DoD HPCMP--our users.