TOPEKA, Kan. (AP) — Kansas Gov. Sam Brownback is easing the state’s motor-carrier laws to help hasten deliveries of relief supplies to farmers and ranchers affected by massive wildfires.

The Republican on Thursday signed an executive order waiving certain transportation regulations to make it easier to immediately deliver large quantities of hay, feed, fencing materials and other relief items.

Since last weekend, wildfires in Kansas have charred more than 1,000 square miles of land and damaged or destroyed dozens of structures.

The firefight Thursday was focused on four counties, down from 21 on Monday.

One blaze, encompassing two counties along Kansas’ southern border with Oklahoma, is the biggest wildfire on record in Kansas.