In response to the increased threat of terrorism following the September 11 , 2001 attacks in New York City , there was a growing need to enhance the civil defence capability of the country . In addition , SCDF realised that in the wake of a crisis such as severe acute respiratory syndrome , Nicoll Highway collapse , 2004 Indian Ocean earthquake and tsunami , large scale manpower is required for sustained deployment which will be taxing on its standard regulars . Mobilisation of NS men is not feasible due to impact on economic activity and deemed too heavy a response
2004 Indian Ocean earthquake and tsunami
2004 Indian Ocean earthquake and tsunami
Civil Defence Auxiliary Unit