Didn't click the video so idk if this is what the OP does, but my group just ran 6 celestial nighthawks. Here are some easy ways of going about this. 3 nighthawk shots will guarantee a kill from any distance. The other 3 can save their super for the next gorgon. 2 nighthawk shots will get a gorgons health to super low, (assuming you shot both shots in gorgon crit spot) and then just finish it off with some primary gun fire. Personally my group found this to be the easiest way of going about it. No need for getting seen or worrying about pushing the gorgons around, needing tether, or heavy ammo. Good luck Guardians.