The safety instructions for passengers, which I remember by heart word to word, have a key lesson for us. In case of cabin pressure loss, oxygen masks will automatically appear in front of you. To start the flow of oxygen, pull the mask towards you. Place it firmly over your nose and mouth, secure the elastic band behind your head, and breathe normally. If you are travelling with a child or someone who requires assistance, secure your mask first, and then assist the other person. Keep your mask on until further announcement.