The thing is
"NSmen who
have reached their statutory age i.e. 50 years old for officers and
40 years old for Warrant Officers & below and do not require
their PE items anymore, MAY return their PE at the following
designated collection points"
That means I can junk the no 4. into the dustbin. Because
"MAY" means not compulsory.
For the helmet and SBO, may be emart blah. it might be stuck in
the rubbish chute. After all, it has already expired.
Of cos u can throw it into the dustbin, but just remember to
remove your name tag just in case.