Marten almost jumped when the comm barked at him. “Yes S-sir!” he stammered out in return. He took several more breathes as he screwed his courage down tight.

Looking down the line of men, he could see they were scared, but it didn’t take a rocket scientist to realize that. Every time a particularly shrill scream pierced the air, several men cringed.

“Men! Unpack your ultrasonics!” Marten half-screamed over the horrifying sounds of battle. One by one, they pulled out the special equipment they’d been given and broke the seals as they opened them. Uncertain, each man put the masks on and secured them down snug.

One man cursed as he realized that his package took a hit earlier. He’d face the Psykers without it now.

Soft clicks followed, one after the other, immediately accompanied by a rising pitch as the systems warmed up. From inside each mask, green illumination bathed each man’s eyes as he adjusted to the new images presented.

With a motion of his hand, Martin commed, “Over the edge, boys…”