Khatib Camp only if the back gate is open (depending on how
ngeow the incumbent camp commandant is). Those who go to RT there
would know. If access is closed to them, then they must either walk
the fence perimeter to the front gate along Sembawang Road (ala the
2.4 km route), or alight at Yishun MRT instead before changing to
the No.171 bus (extra half a hour's ride, for the waiting & the
traversing of the HDB estate).
The nearest to MRT? I'll go with Chong Pang Camp, very near to
Yishun MRT although I can't quite recall which side the camp gate
is. Stagmont Camp in Teck Whye is also relatively close to CCK MRT,
right?
Interesting topic.