IK Project Meeting

Today, I have an important meeting. I must be ready for the that. There is going to be members from four different companies. Two of them are from the subcontractor companies, me from the contractor and the three from the implementing acency. I have a the responsibility of arranging meetings, following up the calendar and completion of issues, assigning new issues to subcontractor companies and implementing agency, reporting regulary to implementing agency and my company...vs.
Assigning tasks to team members from different companies, controlling the tasks which are said to be completed(!!), follow up the unfinished ones, explain the reasons of being behind the schedule...
These tasks seem to be easy for most of the people , but these are actually not easy.
You can not trust people from different companies, even in your company. One says that everthing is okey and all tasks are finished, but they are not!!!! Then you warn about the unfinished tasks in order to make them to complete. In short, it is hard to work in a distrustful environment. One should cover himself .
Because of the reasons above I have to be prepared for the meetings. Meetings are the only environments that you ask questions to every party get the true answers , false answers or wrong answers, check the previous issue list by asking every person in charge of doing that, warning the ones behind the schedule and reschedule them, preparing new issue list with specified deadlines and persons in charge. Besides, after all meetings I give out the meeting records to every participant. That means that every task, every assignee, every word, every issue is properly documented. This documents are really important for me.