We hold this class on both US Park Service Property and parklands controlled by Maryland whom has jurisdiction over the waterway. Parking is limited at Lock 5 so we highly recommend arriving by 8:30 AM so we can organize parking and leave spaces for other visitors and park service vehicles. Please use discretion when changing clothes as many park visitors pass by this area. Leave no trace is always a good rule to follow. Although Lock 5 has restroom facilities, they may be out of order the day of the class. We are very fortunate to have such a great place to run our training classes - please treat this area with respect so we are always welcome in the future.