You are certainly free to get any ERS that you want but keep in mind that whoever you get, they will have the SAME access to the SAME tow trucks and service facilities as Coach-Net, Good Sams, etc. None of the ERS companies have their own fleet of tow trucks and mechanics. 99% of the time, ANY ERS can take care of your problem with no hassles at all. Occasionally, because of your remote location, or because it is a major holiday, they may have a little trouble getting you immediate service. In your case, you were on a government facility that probably has a security gate. I would also assume that there are only certain tow truck companies that are authorized to operate on that base. Obviously it would be a big lapse in security if they just let any tow truck drive on to the base. In any case, there may have only been a few companies authorized and even those companies MAY have needed a security escort to come to your location. ALL of which would have to be coordinated to make it happen. I doubt if any ERS could have waded through all of the government BS any better, but that is something that you will have to find out for yourself in the future.