Sea, Angel.
Manta class sub carrier.
An advanced submersible, developed to deal with our need for a cheap and effective version of the carrier for use on our home turf. This craft is heavily armed, capable of killing just about anything- even carriers, carries about the same amount of troops as a standard carrier, and can provide heavy fire support for shore landings, and it packs all of this with the ability to slip under the water and creep away, nearly undetectable. It is currently Very expensive, an incredible step up from the normal carrier, and it effectively eliminates supply issues in sea zones along with being energy efficient, however, it cannot operate outside of sea zones, merely provide long range fire support to land based offensives.
And this is where the Sachiel type angels come in
An accidental creation, formed from an accident with the Iso pools, this creature is somewhat pilotable/directable, and is incredibly fast, both on land and underwater. Its main unique capabilities are threefold, its incredible durability and self healing, its eye beam, and its ability to fly short distances/glide down from high altitudes. The eye beam is a potent weapon, suspected to be able to even pierce the armor of most carriers, and able to hit them, it can shoot just about anything it can get line of sight on, within visual range. It's durable enough to survive tank shots and almost anything else we throw at it, though it was damaged, it healed itself fast enough to render the damage deal meaningless within a few minutes. This entity is a National effort to produce.