VSFS meaning in Academic & Science ?

The Virtual Student Federal Service (VSFS), formerly known as the Virtual Student Foreign Service, is a U.S. Department of State program that offers opportunities for American college and university students to virtually intern at U.S. federal agencies. There are over 500 opportunities available at 33 federal agencies, and many of the opportunities are looking for more than one intern. Interns can be enrolled in a class or classes at any tertiary institution, but they must be American citizens. All work is virtual, and background clearances are not required. These opportunities are unpaid, but offer work experience, sometimes involving foreign languages.