/// <summary>
/// Start the quiz.
/// </summary>
/// <param name="szDefaultAirportList">The list of airports to use</param>
protected void BeginQuiz(IEnumerable <airport> rgAirports)
{
mvQuiz.SetActiveView(vwQuestions);
// Strip any navaids from the list; not an issue for user airports, but an issue for US airports
m_AirportQuiz.Init(AirportList.RemoveNavaids(rgAirports));
NextQuestion();
}