I have 3 best friends & each of them have a younger brother.
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Friend A is a NSF Driver in RSAF & later become a Senior Transport Supervisor in RSAF as a NSman.
Friend A's brother is now a NSF Auto Tech Spec in Army.
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Friend B is a NSF Driver in RSN & later posted to Army as a NSman.
Friend B's brother is a NSF Commando in Army & now still the same as a NSman.
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Friend C is a NSF Armour Infantry Trooper in Army & now still the same as a NSman.
Friend C's brother is a NSF Driver in Army & now still the same as a NSman.