the NV goggles will instantly modify any unit, so that its vision range is WAY extended during the night, same thing goes for binoculars during the day (not sure about during the night). NV goggles make the AI a lot more effective, theyll engage ai from ranges from which non nvgoggle ai wont even shoot back if fired upon
as for bombs, im not sure. i remember i was in an abrams, and it was ither a spetz natz or engineer, that got really close, layed a bomb, and detonated it. this was simple ai, full skill settin, and they had NO scripting...