We called SmogBuster because we had to ventilate for a bakeout on a large line and they put together a ventilation plan complete with drawings and resource and equipment loading on it. They did it in a timely manner and also helped us with some other ventilation concerns we had with some large sections of ductwork that had smoldering material in it. Their equipment is pretty reliable. We don't have any issues with it. It doesn't break down often, and the people they have set it up and maintain it are excellent. They're very accommodating. If you send in a request they will coach you in what you may need. They can come do site-visit and put together a plan or you can build a plan together. They're very knowledgeable in their business which really helps.