Abstract: High speed scrubbing of airspace radar returns is provided. A system can include a central processing unit (“CPU”) and a graphical processing unit (“GPU”). The CPU loads time-ordered airspace radar return data that includes radar returns each encoded as an object with location information, time information, and property information. The GPU generates arrays including the location information, the time information, and the property information reorganized into a location array, a time array, and a property-based array. The GPU receives an indication to scrub a display of at least a portion of the airspace radar return data to a time window prior to a current display time or subsequent to the current display time. The GPU retrieves, from the arrays, a location entry and a property-based entry that satisfy the time window. The GPU renders frames with pixels corresponding to the location entry, the time entry, and the property-based entry.

Abstract: A resilient shield assembly for use in engaging a protective sheath releasably mounted on a syringe needle assembly the assembly including a resilient annular shield joined to a resilient tubular handle depending from one side of the annulus. The interior dimensions of the tubular handle are selected for resilient grasping of the sheath. In one implementation the handle may include a central ejection element aligned to oppose the inserted sheath while in another example both ends of the handle are open.