 CENTREVILLE, Va., June 16, 2021 GLOBE NEWSWIRE -- Parsons Corporation NYSE: PSN delivered the secondary payload on the recent SBIRS GEO5 Altas V launch as part of the existing 100 million Launch Manifest Systems Integrator LMSI contract. Awarded in 2019, LMSI is designed to expand access to space and maximize the orbit delivery potential of each launch. The company designs, develops, tests, and integrates multi-manifest satellite vehicles on U.S. Government space launch systems. 