PORTLAND — A firefighter died on the first day of what is typically the Pacific Northwest’s busiest month for wildfire, the 28th wilderness fire crew member killed this year in the nation.

John Hammack of Madras, Ore., died at the scene Thursday after being hit by a falling tree while removing fuels in the path of a small wildfire in the remote Mount Washington Wilderness Area in the high Cascades. A second firefighter, Norman Crawford of Sisters, Ore., was hit on the shoulder and taken by ambulance to a hospital, where he was treated and released.