We saw several guys dressed similarly at breakfast in the lobby of our motel in Winnemucca, Nevada, wearing T-shirts with a skull-and-crossbones logo with tommy guns for the crossbones, and the words “Panaca Jane”. When we got home I tracked down Adventures of Panaca Jane
with Google and found that the polite young man who offered Arlene his place on the lobby couch (so she could sit down to eat breakfast) was probably an elite forest fire fighter. The link I gave you will get you to several pictures of fire-fighting aircraft, including this one which I copied from that site so you could see the logo:
Panaca is a town in Nevada, maybe 100 miles north of Las Vegas, on US highway 93 but not anywhere near any interstate highway.