sentences:  On 17 August 1991, two RSAF pilots were killed at Poyan Reservoir.It is part of SAFTI Live Firing Area (South), which has restricted access.There are two restricted access gates at the end of Old Choa Chu Kang Road for connection to either end of Poyan Reservoir, as the road is quite narrow (is only accessible to pedestrians, bicycles and all military vehicles), together with the Lorong Danau (between Chua Chu Kang Camp and Jalan Sungei Poyan).