Navy Helicopters Reinforce Guajataca Dam With Concrete Barriers

The U.S. Army continued maintenance on the damaged Guajataca Dam in northwest Puerto Rico on October 6.

This video shows an MH-53E Sea Dragon helicopter transporting concrete barriers into the dam to strengthen the weakening structure, which had been leaking water since being breached in late September during Hurricane Maria. Upwards of 70,000 people living downstream fled the area after Puerto Rican officials announced that the dam might fail. Credit: US Navy via Storyful