VERY serious. I've been there to attend courses twice, all the
while I took 854 and walked in from Khatib station. It takes no
more than 15mins to walk from the MRT station to the camp side gate
at Yishun Ring Rd next to Naval Base Sec. Going up a few more stops
to Yishun Interchange and transferring to Service 169 or 171 is a
plain waste of time.