Description. Mercury GSE is the leading provider of rental, leasing and full-service management of ground support equipment (GSE) serving the broader aviation industry. At Mercury GSE, we help our customers save time and money by providing the newest and best GSE equipment, flexible rental/leasing/buying options, and 24/7 customer support. Our vision is to be the most trusted GSE provider, redefining customer expectations of what full-service GSE...