In 2015, for the first time, millennials outnumbered baby boomers as the largest generational segment of the U.S. population. This report describes how the intelligence community (IC) must engage millennials across multiple segments to succeed in the future: millennials as intelligence clients, employees, and partners and as members of the public. The authors explore how the perspectives and experiences of millennials falling into each segment are relevant to IC functions and missions. Millennials in each segment may perceive intelligence differently from previous generations, which may influence whether and how they partner and engage with the IC; such decisions will affect future intelligence missions. This report provides an understanding of areas in which intelligence agencies may benefit from further study.