The Emergency Reports for a site can be accessed through the Site's Dashboard page. Under the Report heading, there is an Emergency link represented by a notepad icon. Clicking this will take you to the Emergency Report page.
From here you can view the status of all tests on your Site. The report is separated into four tabs: Active, Completed, Future, and Cancelled. The report is presented as a list of Test Groups, followed by the number of tests in each state (e.g. How many are Cancelled, Queued, etc).
You may find the following links helpful: