HK-AERIAL

The HKAerial is primarily used for support for other drones and searching ruins with spotlights - it can also dogfight suprisingly well. Occasionaly it drops off infantry drones or takes back human captives to skinning facilities or labour camps. It's counterpart, the HK-BOMBER, is the same, except instead of the usual four 50 caliber miniguns and 80x high explosive missiles, it is equipped with the four miniguns and twenty semi-nuclear (meaning they're nuclear but do not have as much power as a real nuke) bombs.
T-600

Equipped with a minigun that fires 7.62 caliber rounds at about (imo) 1,000 rounds per minute, this is a support infantry unit. It's an older model, that is easily dispatched by two forty watt shots to the head.
HK-HARVESTER

The harvester is a large drone, used for taking out large TechComm installations. It has a container on the back for depositing humans at labour camps or skinning facilites. It can deploy MOTO-Ts from launchers on its back, with a large 200mm cannon on its top, along with two fifty caliber miniguns on its shoulders.