I dont think it was the legal arm of the law. A lot of product that is carried in the semi trailor has laws that dont allow you to carry a handgun as well as a lot of pick up and delivery spots wont allow you on there premises if you have a gun in your truck and also certain companies you are driving a load for dont allow handguns to be in your truck or on person. I drove for several years and for a lot of companies and these were there rules. So he might of been at the wrong place at the time or hauling a certain type of product and DOT gets involved.