Planes with banners that read “God-LESS America” or “Atheism is Patriotic” will be flying over 27 states on Monday. While people might be leery to see the messages overhead, the $23,000 campaign has had a struggle with those who are supposed to bring it to life.

Justin Jaye of Fly Signs Aerial Advertising, who is orchestrating the flights for American Atheists, said out of the 85 people in the country who fly these sign-pulling planes only about 17 have agreed to fly the messages.

“I’ve been in this business for 20 years and I’ve never run into so much resistance on people flying,” Jaye said. “I’ve had pilots who are actual atheists who said, ‘Justin, I am an atheist and I won’t fly it because I can’t wear a bulletproof vest.'”