 In 1994, the National Council revised the course content again to add key concepts based on Ethics in Action which had been added to Boy Scout training and literature. The leadership competencies remained an essential part of Wood Badge until 1998, when the National Council revised it again to use the unit meeting and a troop camping activity as a delivery model. This new version, re-titled Wood Badge for the 21st Century, was initially revised to include principles of Situational Leadership. However, the Center for Leadership Studies, which owns the trademark for Situational Leadership, required the Boy Scouts to pay royalties for each Scouter attending Wood Badge nationwide. The Wood Badge Task Force decided to describe how groups change and evolve using more generic, non-trademarked language free of royalties. The program emphasized the stages of team development based on the principles described by Bruce Tuckman in 1965 as forming-storming-norming-performing.
