Another nail in the coffin of morale in that all events involving alcohol I.e. Thursday bops, exchange drinks, games nights and mess functions will have to move to the weekends where no-one will go to them. I'm not advocating people turning up drunk for duty however if a level of zero alcohol. in the blood stream is used for critical staff then it in effect introduces a drinking ban for them mon-fri or any other flying days and as we all know in the interests of fairness we'll all get tarred with the same brush.