The Associated Press has a new piece out today as part of an investigative series it’s producing with PBS’ “Frontline” focused on former national security adviser Michael Flynn and his ongoing descent into extremism and Christian nationalism. The investigative series will roll out alongside a documentary tomorrow night called “Michael Flynn’s Holy War.”

The new AP piece is a fascinating look at The Hollow, a bunker-like, Christian nationalist, far-right community site in Sarasota County, Florida that has become a MAGAworld meeting center and incubator for some of Flynn’s efforts to weave Trump grievances into politics at a hyper-local level. The Hollow has all the markings of a militia-community — even though the founder maintains it’s anything but that — that hosts events sponsored by Proud Boys family members, offers “Biblical citizenship” classes and is home to a gun range that offers classes to children as young as six. Flynn reportedly has visited the site multiple times this past year and financially supports the organization.