added sky platform that connects the main sniper balconies,
added and built cubemaps including ones for the two helis (btw they share the same path)
added two helicopters(if you want to ride them, you need to type these commands:
sv_cheats 1
buddha
noclip
this is because there is no way to reach the helicopters unless you are a really good jumper. also you need to be invincible (buddha) because touching the rotor blades will kill you.)