the old adventures of miller , naked snake ocelot and zero

im curious who is he peratining at the first segment : miller(looks really him and the timeline of his event "1970" ), right after naked snake's pulse satabilizes and says "What about him?" which we are also looking in his/her perspective in the trailer

who is he/she

i not convinced that we are fighting his nightmares. but it is a first

from the end where the voice sounds like eve saying:

"V has come to"
got to think of it

it looks like a reference to mgs4 debriefing epilogue

so this is the time where snake and zero became enemies

starting to make clones of him . because of the fact that he might not wake up and die