You are in the army now and you need to do your part, but don’t worry this is not for free. You would be making money out of it since you are the truck driver and it is your job to deliver some crates to the other camps. As long as it could fit in your truck then you should carry it in your truck. However, times are hard now and everyone is in high alert. There is a war going on and you need to be prepared for anything. If the enemy spotted you then you can bet on it that they would be targeting your truck. You need a way to fight back and that is why it is a good idea to bring your gun. Remember that you are part of the army and you in the battlefield means that you need to protect yourself. Though, you are not in the frontlines, but the enemy knows that you would be delivering some supplies to the camp, so they would target you for sure. They would want the crates for themselves and with you out of the equation, it means that there would be less soldiers for them to fight. In this game, the whole idea is to bring those crates to the camps. You would know what to bring in each camp since it is indicated in the map. But, it doesn’t mean that you can’t bring something that camp would not use. It is just that they would need it more. You would earn more if you bring what is indicated in the map than bring something that you just want to carry. The law of supply and demand is still effective here. AS you go deeper, enemy would try to stop you and that is why, you need to bring some gun with you.