Vibration testing has been used to identify both workmanship and design issues in many interplanetary spacecraft. For the Cassini mission to Saturn, the spacecraft experienced an electrical short from the radioisotope thermoelectric generator to its spacecraft mount during a system random vibration test. The vibration wore isolation coating off of the spacecraft mount, which could have resulted in significant degradation in spacecraft electrical power. In response to this finding, the spacecraft mount was redesigned. For the Mars Exploration Rovers, fundamental modes of the Rover in spacecraft random vibration test were 20% greater than predicted in all three axes. The vibration test also revealed improper torque of bolts on some tanks. Afterward, the bolts were properly torqued and the test completed successfully. During testing of the MSL Rover several motor encoder screws backed out of at least one of the Rover actuators during random vibration testing. The actuators are used throughout Rover and the issue was unlikely to have otherwise been found before launch, which could have been a serious threat to the mission. Fortunately, OSIRIS-REx completed its sine-vibe test without any issues – the spacecraft is ready for transport and launch!