A shortage of jet fuel, coupled with supply chain issues and an urgent demand from firefighting aircraft, continues to cause problems at airports around the US West. In Nevada, state and federal lawmakers said they are investigating a possible shortage of jet fuel that could delay cargo delivery and passenger travel at Reno-Tahoe International Airport in the coming days.

Meanwhile, a spike in demand for jet fuel both by commercial airlines and from firefighting aircraft in Montana and the Pacific Northwest led to departure problems and daylong flight delays recently at Bozeman Yellowstone International Airport.

And in California, recent flights in and out of Fresno Yosemite International Airport were disrupted by jet fuel shortages blamed on the lack of tanker truck driver deliveries.

Lawmakers said the Reno-Tahoe airport serving Nevada’s second largest metro area faces a shortage of jet fuel that could force the cancellation of cargo and passenger fights, potentially restricting the flow of tourists and essential goods into the northern part of the state.

Besides serving Reno, a popular gambling destination, the airport is the nearest passenger terminal to Lake Tahoe.

Nevada’s political leaders have pledge to minimize disruption at the airport and ensure the aerial fight against Western wildfires isn’t hampered, calling “further failure to secure adequate fuel supplies is unacceptable.”

The Reno airport’s shortage is caused by a confluence of factors, including a scarcity of tanker truck drivers, said Stacey Sunday, a spokeswoman for the Reno-Tahoe Airport Authority. “There’s just nobody available to drive the trucks of fuel in here,” and it’s hard to predict long the shortage will last, Sunday said.

Reno-Tahoe’s longest runway also is under construction, limiting how much extra fuel airlines can load onto inbound flights because heavier loads require longer stopping distances.

Elsewhere, Wyoming Gov. Mark Gordon is allowing truck drivers to work longer hours while they deliver fuel that might be needed for firefighting aircraft elsewhere.

Other Western governors including South Dakota’s Kristi Noem have signed similar orders, although Gordon’s still prohibits truck drivers from driving when tired. Government rules usually limit truck drivers’ road hours to prevent fatigue-related accidents.