You need not have to be paranoidal to imagine that security
should be tightened at and around these two crucial points.One of
them is the tunnel used by CTE linking Ayer Rajah Expressway,
another one is the tunnel used by MRT linking the east, the north
and the west.
As the two tunnels are under Singapore River, the transport system
may come to a critical halt if these two tunnels are sabortaged or
bombed by terrorists. If water were to seep into the mrt tube, the
consequences will be horrendous during peak hours as the flooding
can go as far as Orchard station or even further, Kallang to the
north and Tanjong Pagah to the west or further. As for the CTE
tunnel, the tragedy may just confine to the tunnel itself.
Daming up the Singapore River may have taken away some of the
threats but if the terrorists are determined, the security forces
may have to think of ways to counter them and Singapore just cannot
afford to let it happens!