Just security screening at SYD transit. It can be a long queue when busy early in the morning, especially when the airport seems to be short of staff and most of the pax are stressed by the delay this causes.

Delays continue even at quieter times when the two screening lines are reduced to one, and the overworked operators resort to shouting at the pax that they must "do things properly or their bags need to be rescreened and make us all wait longer"