Below the surface, the ground vibrated. The Bugs were coming.
The floor dropped out. For a second, there was the stomach-flipping void of space, then the violent shudder of the atmosphere hitting the heat shield. Outside, the sky of Klendathu was a bruised purple, filled with the streaks of a thousand falling stars—each one a soldier. ROBERT A. HEINLEIN FANTERIA DELLO SPAZIO
The MI moved as a single organism. They didn't run; they marched with the rhythmic thud of pressurized boots. Johnny slid into his egg-shaped pod. The darkness swallowed him, save for the amber glow of the HUD. "On the bounce, troopers!" the radio crackled. Below the surface, the ground vibrated