The Keystone Assault is a member of the United States Women Football League. Previously have been a member of the Women's Football Alliance and a former charter member of the league. The team began play in the WFA for its inaugural 2009 season. Based in the Pennsylvania capital of Harrisburg, the Assault plays its home games at in nearby Hummelstown, Pennsylvania. The team was derived from many players and coaches from the defunct Central PA Vipers (2006-2009).