Below, grunts hacked through the jungle with hype-pumps strapped above elbows to give them that little extra death-dance fury in combat, a shot of liquid hell in a blue plastic vial. Maybe they got ten minutes’ worth in a week. But coming in at treetop level, reflexes cranked to the max, flying so low the ground troops never spotted you until you were on them, phosgene agents released, away and gone before they could draw a bead . . . it took a constant trickle of hype just to maintain. And the direct neuron interface with the jumpjet was a two-way street. The onboard computers monitored biochemistry and decided when to open the sluice gates and give the human component a killer jolt of combat edge.