It's been a while since Riley saw Xander or Spike, hasn't it? So is he going to be shocked or disappointed when he finds out about the? Or both? *g*
There is a tiny part of my mind saying 'is there really a Sungsen, or is it Riley? But I think you closed that possibility off, so it is only a little voice. I can't help being a suspicious bastard.
Spike is great here, I love his annoyance, bordering on homicidal, with Riley and the army's stupidity. The observation that he only goes quiet in extremis, was a powerful one.
Nicely done. Really exciting now.