Tom Arcuri of Blauer Tactical Systems presents the Close Quarter Form (CQF), a sequence of moves that drills a set of biomechanically efficient and effective close-quarter combat tactics. It is part of their S.P.E.A.R. system, which teaches that the most efficient, effective moves you can use in a fight--and in training--are ones that leverage the body's natural, instinctual, unavoidable behaviors (such as the flinch reflex, for example) and convert them into efficient protective and combative tactics.
The problem with a lot of martial arts and/or self- defense training is that it doesn't mimic the conditions of a real fight. The CQF is specifically designed to assist in visualization, muscle-memory, balance, target selection, and tactical flow--tools you can use in actual confrontations. Each move in the drill is a response to some aspect of a real fight. As a drill it is performed in a specific order not because a real fight would follow this sequence, but simply for conditioning and patterning purposes. Practicing the CQF helps prepare you to respond to an ambush or the rapidly changing elements of a fight as effectively as possible.