Please do not post if you disagree with my theory, I would like a clean thread on focussing on the task at hand.
I firmly beleive this is the answer to the Jetpack mystery. The only problem is, it is extremely diffucult to achieve.
My theory is that the jetpack is on floor -1, underneath the bunker circled.
It has been proven that interior has been modeled for this elevator. If it had no use they would only model the exterior.
And it has links to the UFO and Mural. At 1am strange lights appears on the bunker.
I think the elevator shuts or locks as soon as the alarm is set to hide the secret.
If you think this is plausable and have 100% please have a go, and you could be the first to see the jetpack.
Possible conditions to activate elavator -
No previous wanted level in base. (I have got into the base and was seen, but then lost them, and the door did nothing)
No cheats used in stats.
3 am when the lights start.