You don't need any special software (other than an Internet Browser) to take this course.
While the majority of references in the course are in "text" format, you might want to access one that is in "PDF" format. These references can be viewed and printed with Adobe Acrobat Reader which is available free from Adobe Corporation and may be downloaded and installed on your computer. (Link to Adobe Reader download from the Adobe Corp web site)
Now, let's look at the definition of a Special Government Employee.