I just finished reading New Blood a couple days ago (yea it took me a while to get around to reading it) and something interesting came up. Buck insinuates that Veronica could easily take him down due to her “ONI training”. ONI training was specifically mentioned in another piece of Halo material as well, which happened to be Nightfall. It’s also implied there that ONI training is supposed to be quite a big deal. Vale is also exceptionally good in CQC and she happens to be with ONI as well.
My question is why does it seem like those who go through ONI training are so much better or at least implied to be in terms of hand to hand combat and CQC than the ones who just receive basic?