Aengus Ó Snodaigh (Dublin South Central, Sinn Fein) | Oireachtas source

I welcome the Minister of State's statement but part of the question was when did it become mandatory. The final part of the reply seems to suggest that not all Air Corps personnel are trained in the use of respirators. When exactly did it become mandatory for all Defence Force personnel to have this training? Is the training in full use currently?

See this speech in context