Played the map on my LAN.
A few observations:
-grenades/weapons still fall through floor / roof, also the glass.
-can shoot through glass (at least from roof to 2nd level (could should bottles on the table) Could not test reverse because alone
-At the north side, at east section is an entire section of floor on 2nd level you fall through as a player, at 2nd ladder to roof and above the fuel tanks. See pic
-whining of the helicopter got a bit annoying, maybe sound can be changed or the helicopter replaced by a fighter plane? BTW, after a good number of minutes the helicopter disappeared.
Edit: well this is strange. I loaded the map again and this time I did NOT fall through that floor section and I did not hear the helicopter whine sound.
Loaded the map a third time and this time did hear the helicopter whining sound but still didn't go through the floor. Weird. Apparently sometimes stuff does or does not get loaded (?).
Flak on glass roof? Strong glass
I like the shooting range part and lamps.