Yep.
Call GL who will help you get with the people in Battle Creek, who have the ability to give you the required authorization if they so deem fit.
This will be a govt. function. Not a GL one to get you authorization. The people they hook you up with in Battle Creek will be govt.
I cannot legally sell you a trailer nor a MV as a non-US citizen. If/when you apply for preapproval at Battle Creek, they will make it a whole lot easier on you if you are applying for a trailer coded for a EUC then a MV, but anything is possible. If you need it for a job, be sure to state so. If you are going to paint it civilian colors, be sure to state so. The main intent is we do not want these machines, looking like military vehicles in style and color, to be used against us. Good luck!