public JsonResult GetTargetZone()
 {
     Guid? gameId = this.Session[MagicStrings.SessionGameId] as Guid?;
     string email = this.Session[MagicStrings.SessionPlayerEmail].ToString();
     TargetZone targetZone = MvcApplication.GameHost.GetOpponentTargetZone(gameId.Value, email);
     double blastRadius = GameHost.ShotBlastRadius;
     var model = new GetTargetZoneVModel()
                     {
                         Latitude = targetZone.Center.Latitude,
                         Longitude = targetZone.Center.Longitude,
                         Radius = ConvertGeoDistanceToMeters(targetZone.Center, targetZone.Radius),
                         BlastRadius = ConvertGeoDistanceToMeters(targetZone.Center, blastRadius)
                     };
     return this.Json(model, JsonRequestBehavior.AllowGet);
 }