Now we travel to another facility and enter a workplace that repairs very large amphibious vehicles. The noise level is high, and large machines are in operation. We see several individuals working with drills and presses as we walk through the work areas.

The employees below catch our eye, and we note of a particular hazard that could occur for the employees while operating the machine. There are several hazards depicted, but what is the most critical protective equipment not in place for these employees?