The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. To simulate the sonic thumps expected to be created by the X-59, NASA Armstrong Flight Researcher Center pilot Jim Less performed inverted dive maneuvers in an F-18, shown here, to generate softer sonic booms. The sonic booms were recorded by 10 ground recording stations stretched across 30 miles of desert near Edwards Air Force Base.