Since they mostly operate in areas with heavy Tiberium contamination, ZOCOM forces make heavy use of sonic weapons to aid their abatement efforts. One such example is the ZOCOM Orca, a modified Orca Mk. III that fires sonic grenades, which cause powerful area-of-effect damage.
Since operations in the hostile environment of Red zones often require more durability than sheer firepower, ZOCOM Orcas cannot be upgraded with Hardpoints, but can be equipped with Ceramic Armor to increase their survivability.
Purchasable at a ZOCOM airfield for $1000 and takes 0:30 to research.
Unlike the standard rockets used by the Orca, sonic grenades have a decent area of effect and can cause massive and sometimes lethal damage to infantry and ground vehicles. However, just like regular Orcas, they are completely defenseless against enemy aircraft. Meaning they have to be protected by AA units. They also cost 400 credits more than a regular Orca.
They share their voice set with the standard Orca.