 1 Squadron's aircraft and approximately 100 personnel were involved.From 20 September, when INTERFET forces began to arrive in East Timor, the F-111s were maintained at a high level of readiness to conduct reconnaissance flights or air strikes if the situation deteriorated.As it happened, INTERFET did not encounter significant resistance, and F-111 operations were limited to reconnaissance by RF-111Cs from 5 November through 9 December.