A heavy-lift helicopter saves a Colorado town, an elite team of engineers harness the world's biggest mobile cranes to move an offshore wind turbine, and loggers fight an epic battle to save the gulf coast of Louisiana.

A helicopter must dodge power lines as it transports an arctic oil tank, a megapede transporter moves a barge into the Gulf of Mexico, and a million dollar sub hunts for warning signs of an impending tsunami on Lake Tahoe.