Beautiful piece of Flash!
I Found the Story while very simple, it often falls lackluster in it's application of this of dramatic tool, I felt this was not the case in this flash, I found the pacing to be very sharp and allowed it to flow much more naturally then the normal flare on this site. Your selection in music was spot on for the emotion you where trying to convey to the viewer. The level of detail of the flash was very well done and considering the limitations of flash I feel bonus codo's are in order.
My one qualm with this flash was the selection of Helmets used in the flash for the other Spartans, they all seemed to blur together in more ways then one, I while I am aware that Most of the helmets tend to blur together in Halo Reach, I felt some of the more Unique Helmets would have provided more of the Standard "Halo feel", While I realize that this might makes things difficult on a artist yourself, I feel this distracted from the overall feel of the flash and pulled me out of the overall experience.
Very well done, Could have used a few more unique helmets floating around, But exceptional none the less, and if you choose the continue this story I look forward to more of your submissions in the future!