Although the rock layers above the laboratory looked perfectly normal, no different from anywhere else in the wilderness, their interiors were actually hollow. Wind blowing in from all directions could be channeled to a wind turbine, providing the laboratory with its basic power supply.
After Kree Technology batteries came into use, Sheep Cave Valley Laboratory switched to these higher-capacity power units with stable output. However, the hollow air ducts inside the rocks above could not be filled back in, so the wind turbine had not been phased out.
The Kree Technology batteries at Sheep Cave Valley Laboratory were like enormous capacitors, steadily supplying the electricity the laboratory needed. If the wind turbine generated more power than was consumed, it could even recharge the Kree batteries and extend their service life.
It was precisely because the rock layers were hollow and lacked much structural support. When Hulk made one of his huge leaps and happened to land above the laboratory, his weight and downward acceleration made it only natural for him to smash through the hollow layer and fall into the laboratory.
Henry also noticed a formation of helicopters in the air some distance away, following Hulk's jumping route. He called it following because their flight path was extremely clear—they were flying straight toward the laboratory.
Moreover, the helicopters were far from ordinary. They were mainly RAH-66 Comanche stealth attack helicopters jointly developed by Boeing and Sikorsky. They had been designed for armed reconnaissance.
According to Henry's memories from before his transmigration, these things were not supposed to be officially finalized and put into production until February of next year, 2004. Yet in his original world, changes to U.S. military procurement plans had prevented the RAH-66 from ever entering actual mass production.
Either someone had taken the prototypes out to play