With the order given, the drone fighters started to swarm up from the surface of the planet and toward the incoming Klem ships, preventing their smaller escort bugs from advancing on the planet while Max hurried to get Cleansing Light into Position.
If he did this right, he could destroy two vessels simultaneously, blasting apart their plasma storage before they could maneuver. The sudden destruction of two ships should be enough to introduce some hesitation and confusion in the Klem interceptors' orders. Increasing the speed that the Drones would be able to kill them and reduce the threat to the planet.
Any one of those Cruisers was as dangerous to the planet as an entire Klem tide, so they all had to be destroyed before they could deploy their deadly cargo, and Max was pretty sure he knew how to prevent that situation.