[Night Vision Goggles]

I can explain that if the map you used was in the Official Strategy Guide-

A lot of the Items are actually in interiors that aren't really inside the buildings. They're about 1000 meters (?) above the

maps, beyond the limits of aircraft.

I know that's not much help, but at least now you know why.

Good Luck.

you can go to those interiors when you have the gta teleporter but when i got there i didn't find any items

[some of the mods i downloaded won't install]

when i try to install some mods that i got from this site for my game it doesn't want to