|Research|| Air canister upgrade |
Incendiary catalyst upgrade
Explosive beacon upgrade
An air attachment building is necessary if the Beta commander wants to field air units. Air attachments can be attached to hangars to provide a variety of aircraft, or they can be linked to factories for strong anti-air capabilities.
| Air canister upgrade|
Commandos gain the ability to shoot at air units.
| Incendiary catalyst bomb upgrade|
Nimbus now drops catalyst bombs which leave behind a pool of fire dealing damage over time to enemies that remain in the inferno.
| Explosive beacon upgrade|
Stratus recon beacons now explode when they expire, dealing damage to the target and all nearby enemies.
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