AFAICT, this is a team of distinguished scientists that is kept on the government payroll so that the US has the best scientific minds available for national security issues. Sounds great in theory, but when a clearly sympathetic article's chosen examples of the good work the group does include nuggets such as, "In the 1960s, the Jasons invented a type of sensor that could detect enemy guerrillas in Vietnam and communicate their location to U.S. bombers", I dunno, I'm kind of skeptical. I mean, maybe that sensor had a subsequent use case for the space program or something, who knows.