COLORADO SPRINGS, Colo. — Tens of thousands of Colorado Springs residents forced from their homes by a raging wildfire took refuge with friends or family and crammed into hotels and shelters as Army troops helped firefighters protect the U.S. Air Force Academy from encroaching flames.

The blaze was burning out of control early Thursday in the mountains and within Colorado's second-largest city, after more than 30,000 evacuees frantically packed up belongings and fled.

The wildfire was one of many burning across the parched West, blazes that have destroyed structures and prompted evacuations in Montana and Utah and forced the closure of a portion of Zion National Park.