Hmm...a short, yet very interesting prologue.
Everything seems quite well-written. Nothing is given away except for Project Victory and the return of the three Team leaders, which will add some mystery as to how they came back and with what purpose.
The characters as well are mysterious, but I'm guessing their the main protagonists, so it would have to be that way for a prologue. However, I can't seem to make out who or what the characters are(probably just me, though. Maybe other people can tell.)
The atmosphere is great. Showing a dark, dreary environment that will entice readers to continue on with reading the story. The amount of details pushed towards the atmosphere also allows for one to imaging pretty much what is going on.
Looking forward to future chapters! :D