DUKE is experienced in static-line, HALO and HAHO jumps, making him the best person for a mission to stop Cobra forces from testing a devastating weapon made from the Power Stone mineral. DUKE parachutes onto the roof of the Cobra testing lab. The guards do no expect anyone to infiltrate by above, so DUKE surprises them and quickly overpowers them. He makes his way inside, gets the weapon schematics and destroys the lab and prototype. As Cobra forces open fire, the Sigma 5 team's heavy armor dropship swoops down to extract DUKE from the building: mission accomplished!