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[blockquote]A lot of you are very confused and are throwing around theories that aren't faithful to the Metal Gear universe. Let me clarify some things to help you in drawing up these elaborate theories:
1-The events of MGS5 i.e Ground Zeroes and The Phantom Pain, take place AFTER Peace Walker. Peace Walker takes place two years AFTER the Les Enfant Terribles project. It logically follows that MGS5 takes place AFTER the Les Enfant Terribles project.
2-The coma detailed in the Phantom Pain trailer has nothing to do with the Les Enfant Terribles project. That's already done and dusted.
3- The events shown in the Ground Zeroes trailer take place after Peace Walker(see above and the trailer). The Phantom Pain takes place 9 years after Ground Zeroes. The year is at least 1983 when Big Boss wakes up from the coma shown in the Phantom Pain trailer(s). That's 11 years after the Les Enfant Terribles Project.
What events do we know transpired during the 1980s in the Metal Gear universe? Here:
(i)1980: Naomi Hunter rescued by Big Boss and Gray Fox. Big Boss sends Naomi to America. A strong indication that Gray Fox will be in MGSV.
(ii) Raiden born in the early 80s.
(iii) In the late 80s, Solidus, only a teenager but older in appearance, partakes in the Liberian Civil war. Indicates that Big Boss' clones are capable of fighting during this time period.
(iv) VR developed.
Some obvious info that can be gathered from the trailers:
The Ground Zeroes trailer talks of a "UN nuclear inspection" of Mother Base. This is most likely a trap:
-"The Trojan Horse's in" i.e The trap has been set up.
-Burnt-face XOF commander hides their identity(removes XOF logo from the choppers and their uniforms) before departing. Maybe so that they can literally land on Mother Base and attack from the inside.
"The pirate crackdown's a go" i.e Lets kill these mercenaries once and for all.
The "inspection" is actually XOF launching a surprise attack on Mother Base and subsequently destroying it. XOF may be responsible for Big Boss' 9 year coma.
I'm actually thinking the exact time-period for Big Boss' 9-year coma is 1980-1989.
1974 - Peace Walker Incident
1980 - After the Rhodesian Bush War (July 1964 - Dec 1979), Big Boss takes Naomi Hunter to the United States.
Late 1980s - Outer Heaven fortress formed.
Late 1980s - Big Boss takes control of FOXHOUND.
Another event that could have occurred around this time period was Big Boss rescuing Frank Jaeger during the Mozambican Civil War. However, the Mozambican Civil War was from 1977-1992 so suggesting that Big Boss rescued Jaeger either during the time periods of 1977-1980 or 1989-1992 isn't too much of a stretch.
It's hard to find any other 9-year period in the Metal Gear timeline where Big Boss is inactive that fits between Peace Walker(1974) and Metal Gear (1995).
On a side note, here's some interesting tidbits about my 1989 theory:
a) It means that the Les Enfants Terribles program would be 17 years old, meaning Snake and Liquid are both 17 at the oldest. This makes sense because Solid Snake's first war theater was Iraq in 1991, which means he would be 19. His claim to fame was the events in METAL GEAR, which takes place in 1995 which makes Snake 24 years old.
b) If Big Boss does wake up in 1989, that means that Ocelot is about 45, Psycho Mantis is around 19, and Big Boss himself is 54.[/blockquote]