G5 is quickly able to find the group of three stormtroopers. They appear to be in a full retreat from the landing pad area where Kal has stood guard with the shuttle. It appears he's figured out how to use the weapons to scare them off and they are not arguing with him.
Rather than heading towards the communication array, they work their way up the hillside to an external access vent. It's part of the air system and they're able to work their way in with their blasters quite effectively. G5 considers for a few milliseconds and then begins to work the ventilation system to his advantage. Strong gusts of air buffet the stormtroopers as they reach an intersection and they proceed down the easier path which, unfortunately, leads them right into the flimsy covering of the vent for the garbage compactor where they fall into a really, particularly glorious smell and mess.
Tittering to himself, G5 ensures that the external access hatch of the compactor is fully locked down.
This task in hand, G5 scans the remainder of the base. Outside of the unconscious control staff and the confused birthday droids, there are no other beings in the base. It appears to the R2 unit that the base is now under their complete control.