Having only 3-5 squadmates left after stealing the empty cistern made it very difficult to clear the construction site later, even with NVG, especially as their number will be further reduced by unseen CSAT chopper and/or tank that can waste your squad from range if you take wrong route to construction site. It also means that you die often, as well. But regardless, stealing empty cistern without NVG at night means that many in your squad will die, as they don't have NVG, either, meaning that they can't hit the broad side of a barn when ordered to attack. And I finally did loot one from CSAT where the empty cistern was being held. Prior to Bingo Fuel, I did all possible side missions, and did not find any NVG, or didn't think to pick one up. Or at least loot one from dead CSAT guys in second mission.
More like BI expecting people do do at least some side-missions in this episode.