Book excerpt: This report was written as part of a project entitled "Joint Operational Concepts for an Uncertain Future." The focus of the research became an effort to assess the challenges that U.S. Army airborne forces may face in the future and identify capabilities airborne forces will need to effectively address those challenges. This report summarizes threats tothe current U.S. airborne force and explores the concept of an airborne light armored infantry force as a possible means to mitigate those threats. Additionally, the report examines possible vehicle options for such a concept, as well as joint requirements that the concept might generate, particularly in terms of the amount of airlift that an Army airborne unit with an increased number of vehicles could require.