(CNN) - With the nation on high alert in the aftermath of recent mass shootings, police across the country have arrested several men they say expressed interest in their own domestic terror attacks.
James Reardon, Tristan Scott Wix, Brandon Wagshol (Source: CNN)
An arsenal of assault rifles and large knives, a stockpile of ammunition and even a gas mask.
Police near Youngstown, Ohio found all this inside the home of James Reardon: a 20-year-old self-described white nationalist who they say made a threatening post about a mass shooting at a nearby Jewish community center.
Reardon was on authorities' radar after making this post on Instagram showing a man firing off a gun.
A local Jewish leader said it had a disturbing caption: "Police identified the Youngstown Jewish Family community shooter as local white nationalist..."
"That kicked off a very intense investigation. He was charged initially right now with telephone communication harassment and aggravated menacing," Chief Vincent D'egidio of the New Middletown Police Department said.
Police say Reardon attended the deadly 2017 rally in Charlottesville, as seen in an interview with National Geographic.
"I want a homeland for white people, and I think every race should have a homeland for their race," James Reardon said in the 2017 interview.
Reardon's bond was set at $250,000.
His arrest the latest in a string of mass shooting threats.
In Florida, police body camera footage shows the arrest of Tristan Scott Wix outside a Daytona Beach grocery store.
He's accused of threatening to kill 100 people.
The 25-year-old detained after police say his ex-girlfriend alerted them to a series of text messages detailing plans to commit mass shootings -- writing chilling words like: "I wanna open fire on a large crowd of people..."
"He had a rifle and 400 rounds of ammunition. There's a lot of carnage could've been caused... I truly believe in my heart that he is an active shooter. That's exactly what it was. He fits the profile exactly," Volusia County Sheriff Michael Chitwood said of Wix. "Clearly when you look at this kid's background, he is the profile of a shooter. He's 24-years-old. He lost his job, he lost his girlfriend, he's depressed, he's got the ammunition and he wants to become known for being the most prolific killer in American history."
Wix is being held without bond.
And in Connecticut, police arrested 22-year-old Brandon Wagshol last week after receiving a tip that he tried to buy a large-capacity rifle magazine out-of-state.
He's been charged with illegal possession of large-capacity magazines.
Investigators also discovered numerous weapons including a handgun and rifle, ammunition, body armor, and tactical gear inside his home.
"There were some historical facebook posts that indicated his interest in mass murder. Certainly raised an eyebrow so investigators worked very diligently," Lt. Terry Blake, Norwalk Police Department said.
Bond was set at $250,000.