BELLVUE, Colo. - Massive wildfires in drought-parched Colorado and New Mexico tested the resources of state and federal crews Monday and underscored the need to replenish an aging US aerial firefighting fleet needed to combat a year-round fire season.

Wyoming diverted personnel and aircraft from two fires there to help with a 60-square-mile wildfire in northern Colorado. Canada also loaned two aerial bombers to fight the blaze after the recent crash of a US tanker in Utah. And an elite federal firefighting crew arrived to try to begin containing a fire that destroyed at least 118 structures.