Perhaps they do mean at the "unit" level whatever that would be. Squad, Platoon, Company,etc...
I would definitely not be looking to discharge the weapon (unless in self defense) but the reason why I would go to the National Park is because the State Parks dont allow primitive camping and I want room to practice Land Nav and what not over the type of terrain and distances offered by the National Parks system. Reservists dont get the same kinds of opportunities to prepare but are expected to meet the same standard for Pathfinder, Ranger School,etc... What we do get is time. How we spend that time is what's important. It would be my intention to pack my ruck with the same gear I would have to have with me in the field, throw on my uniform,etc and get out there and do it.
I am an experienced Camper but the "camping" that I grew up doing with the Boy Scouts,etc is nothing like what passes for camping these days. In the state parks "camping" means an air conditioned cabin! The few that do allow primitive camping are only for organized youth groups.
Not the world's biggest deal because clearly I could carry the Glock 21 concealed and be ok as far as defensively from animals or criminals but I dont carry my pistol concealed deployed.