I am the lead scientist for the UAS Chromatograph for Atmospheric Trace Species (UCATS), a lightweight and compact gas chromatograph instrument with additional capabilities for ozone, water vapor, and laser detection of trace gases. This instrument was designed for operation on uncrewed aerial systems (UAS) but has also flown on other platforms, such as the NSF/NCAR GV, the NASA DC-8, and the NASA ER-2 aircraft. I work on airborne field projects to study atmospheric composition, dynamics (transport), and climate processes. Besides field work, I am involved with instrument design, building, and maintenance; data analysis, archiving data, and publication of results; and coordination and collaboration with the Water Vapor and Ozone Division within the NOAA Global Monitoring Laboratory (GML) as well as other colleagues in GML and the NOAA Chemical Sciences Laboratory.