U. S. Fish and Wildlife Service - Northeast Region: Blackwater National Wildlife Refuge engine
U. S. Fish and Wildlife Service - Northeast Region: Firefighters and equipment at controlled burn
U. S. Fish and Wildlife Service - Northeast Region: Marshmaster drives along fire line
U. S. Fish and Wildlife Service - Northeast Region: Filming controlled burn at Patuxent National Research Refuge
U. S. Fish and Wildlife Service - Northeast Region: Firefighter with drip torch and hand tool
U. S. Fish and Wildlife Service - Northeast Region: Igniting grassland burn with drip torch
U. S. Fish and Wildlife Service - Northeast Region: Wildland firefighters ready to do controlled burn
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary
U. S. Fish and Wildlife Service - Northeast Region: Patuxent Research Refuge 75th Anniversary