Unmanned Aerial Systems (UASs) will be increasingly utilized for military and domestic purposes in a variety of operations. Unfortunately, the potential these systems afford is marred by a remarkably high accident and incident rate. Pavlas and colleagues (2009) suggested training science is not necessarily integrated into actual UAS training. The purpose of this paper is to propose one approach towards redressing this gap. Specifically, this paper details how the Event-Based Approach to Training (EBAT) can be applied to develop UAS training content and performance measurement tools. Throughout the paper, we outline the steps involved in the EBAT methodology and pare the discussion with exemplars of how UAS training scenario content and performance metrics can be systematically crafted.