That location is currently the address of Cold Spoon frozen yogurt. Cold Spoon has occupied the space since March of 2014. A Cold Spoon employee could not confirm whether the yogurt shop was permanently closing.
Reston has only one other Vietnamese restaurant: Pho Reston 75 at Tall Oaks Village Center.
Pho is traditional Vietnamese noodle soup with variations on additions such as beef, chicken, pork and vegetables.