John Rourke is a fictional character from the Survivalist series of novels written by Jerry Ahern. He is depicted as a skilled survivalist and former military operative who navigates a post-apocalyptic world filled with challenges and dangers. Rourke's character embodies resilience and resourcefulness, often relying on his training and experience to overcome obstacles. Throughout the series, Rourke encounters various groups and individuals, showcasing themes of survival, morality, and human relationships. His adventures highlight the importance of preparedness and adaptability in a rapidly changing environment, making him a compelling figure in the genre of survival fiction.