The concept of Levels of Automation (LOAs) as a categorization of distinct combinations of human-automation relationships arrayed along, usually, a spectrum of possibilities has a long and fruitful tradition in Human Factors. Nevertheless, if a proliferation of novel LOA schemes and uses is any evidence, there is some reason to perceive unrest and dissatisfaction with comparatively simple LOA schemes that have been proposed in the past. This panel will review concepts and uses of Levels of Automation schemas and discuss their relative strengths and weaknesses. A central theme will be whether novel automation capabilities (and, therefore, novel human-machine interaction opportunities) demand revisions to LOA concepts or whether we can (or have) defined a scheme that defines the full space of possible interaction types.