Adding an "a" in the fourth position of the SIC code should return an anticipated/planned symbol with a dotted line but returns the same symbol as when a "p" is in the position.
MilitaryMessage message = new MilitaryMessage("1", MilitaryMessageType.PositionReport, MilitaryMessageAction.Update, new List<MapPoint>(){new MapPoint(0,0)});
message.SicCode = "SFGAEVAA--";
await MapView.LayersLoadedAsync();
MessageLayer.ProcessMessage(message);