12月9日中午12时在新加坡全岛广播了一条公开动员警报。在几个小时之内，90%以上的现役和战备国民服役人员就已经在全岛的三个新加坡空军基地随时待命。

An open mobilisation alert was broadcasted at 12 noon across Singapore on 9 Dec. Within a few hours, more than 90 per cent of Active and Operationally Ready National Servicemen (NSmen) were already at three Republic of Singapore Air Force (RSAF) bases across the island, ready for duty.