In the case that your VCS file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit VCS file extensions. If your PC opens the VCS file, but it's the wrong application, you'll need to change your Windows registry file association settings.
An Agent is simply a representative of the government who can conduct investigations. They do not possess the special power to also arrest people. FBI agents are Special Agents because they are able to both conduct investigations and they possess the special power to make arrests.
Since 9/11, the FBI has sought individuals with at least three years of tactical law enforcement or military combat experience who are in superior physical condition and have served as an FBI special agent for at least two years.