Following the components of an actual tree, the "training tree" has six distinct components: the roots, which provide for subject origin and foundation; the trunk, which encompasses the fundamentals of function; the limbs, which are a natural extension of the more specialized structure; the branches, which diverge in their topical scope and specificity; the twigs, which depict an even greater degree of skill specialization; and the leaves, which are symbolic of the ongoing scenario/simulation training that is directed toward development, maintenance, and growth. In addition, the "tree" has both stage-I and stage-II designations, which apply when issues are addressed regarding the parameters of training requirements and performance responsibilities. All of the parts of the "tree" produce the whole, as the tree emerges as a systemic structure destined to flourish in the enforcement environment, providing a foundation for safe and effective performance. A tree can be used not only in depicting the overall training structure, but also in portraying a specific training curriculum; for example, this article includes a description of the "training tree" for Exigent Vehicle Operation.