UPDATE: Turns out the story is true. In addition to defending his post that day, he saved three comrades. His mantra - "If they are going to kill me, then I have to kill some of them" is priceless. Sgt Pun exemplifies how security operators conduct themselves under fire.
Not sure where this story comes from. However, I am quite impressed.....I will post an update crediting the source and more information on this Gurkha.