UMBC Earth and Space Institute engineers Ian Decker (left) and Danny Nelson (right) attach the Hyper-Angular Rainbow Polarimeter #2 (HARP2) instrument to the shaker table for vibration testing at NASA's Goddard Space Flight Center in Greenbelt Maryland on August 8th, 2022. HARP2 is one of three instruments on NASA's Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) observatory, it was designed and built by UMBC's Earth and Space Institute.