(Haymarket)- A USA gymnastics coach is facing charges after being arrested on Tuesday for allegedly assaulting a girl at a home in Prince William County. Police charged 47-year-old Sergio Galvez with three counts of taking indecent liberties with a child. The alleged incidents happened at a home in Haymarket between August 2007 and November 2008. Galvez was coaching at the Capital Gymnastics National Training Center in Burke at the time. Police are not ruling out the possibility of more victims.