In case the above video does not load -> link to liveleak page <-
See how fast the guy deploys his blade and gets several stabs on his target? From a sitting position, he looked as though he was attempting to fix his pants but what was he actually doing? Setting up a blade deployment inside the reactionary gap of his target. There was a visible delay in reaction from the other soldiers and after there was a reaction, the cascade effect ended with him getting lit up like santa on christmas evening.