1. A mobile data capture system comprising: a sensing unit comprising i) at least one sensor that, in operation, generates sensor data based on detected motion of a user while the sensing unit is attached to one of the user, a vehicle that transports the user, and equipment worn by the user, and ii) at least one camera that, in operation, captures a plurality of images of the user while the at least one sensor generates the sensor data; and processing electronics that, in operation, store data representing the plurality of images and correlate at least one of the plurality of images to a performance metric.