You should also see our Gundams waving hi to the custom officers
at JB, and the tourists at Sentosa....and Raffles City will be
finally revealed as the ulimtate Telsa Coil Tower 
NismoS132, you won't get any useful answers from us here, as we are
all bounded by the Offical Secrets Act. We have no wish to have MSD
knocking on our doors, and invite us to drink kopi. So please don't
ask any more sensitive questions.
If you are anxious / curious to know more, just go read Tim Huxley
Book "Defending the lion city", but read it with a pinch of salt,
as the info inside is not exactly accurate.
If you are a SG male, then you will understand when you are called
up. If you are from our friendly neighbours, Thank you for your
interest....we Singaporeans are too busy with our daily lives, not
interested in any aggresive moves. 