Attack from below!

As Calvo stood poised on the beach, making his decision, a new player entered the scene. Several steel orbs were emerging from the waves, attached to steel bodies with what looked like ancient caterpillar treads attached to their undersides that moved them along the surface. From each of the orbs topping the vehicles were long, cylinder tubes, with no obvious openings. Calva had never seen anything like these devices. They certainly didn't belong to his side of the conflict (or, at least, no such machines had existed in the military forces of his side prior to his capture three years ago). And he did not think such machines belonged to the forces of the enemy whom he had just recently escaped.

Their was silence as both pursued and pursuer watched in stunned silence as about a dozen of these machines emerged from the surf onto the beach. The machines stood there silently, as if surveying this new world. Then, with deceptive quickness, the projecting tube of one of the machines whirled about at one of the guards pursuing Calvo. There was no sound, no light, nothing. But a large hole and a spray of sand erupted not far from the large, blonde guard chasing Calvo, sending her flying. The other guard, the petite brunette, immediately scrambled for cover, as other large holes began appearing, as the remaining vehicles began firing their silent, invisible salvos at the pursuing guards.

So far the vehicles seemed to have either ignored or not noticed Calvo. Calvo didn't know whether he should use this diversion to make good his escape, try to make contact with these strange vehicles, or even help out the now hapless guards!