This mod reenables an unused helicopter spawn on Ukrainian Job which flies in, drops a duo of FBI SWAT (one rifler, one shotgunner), then flies away. This is seen in prerelease footage but remains disabled in modern versions of the game, with the enemy spawns even removed on Jewelry Store which oddly contains a dialogue trigger for Bain to announce the helicopter, which Ukrainian Job does not have. Strange...
This is part of a group of some small edits I've made to a gameplay overhaul I use, ported over to be compatible with the standard game for those who may want them.
Special thanks to @erushinj for some guidance with making these edits