The Coast Guard lieutenant who was planning a domestic terrorist attack was using Coast Guard computers for planning the attack and it was his computer usage that was internally flagged by a Coast Guard computer monitoring program that alerted the feds to his plans according to this WaPo article: https://www.washingtonpost.com/loca...term=.1e2eefaaf80e&wpisrc=nl_headlines&wpmm=1
The U.S. Coast Guard lieutenant spent hours on end planning a wide-scale domestic terrorist attack, even logging in at his work computer on the job at headquarters to study the manifestos and heinous paths of mass shooters, prosecutors say. He researched how to carry out sniper attacks, they contend, and whether rifle scopes were illegal. And all the while, investigators assert, he was amassing a cache of weapons as he ruminated about attacks on politicians and journalists.
But Christopher P. Hasson was not an isolated figure, according to a contractor who worked with him. The 49-year-old lieutenant with more than two decades in the Coast Guard was part of a project to replace some aging cutters in the fleet, tasks that regularly required interacting with civilians and military officials at meetings and on travel.
"I don't remember him saying anything that was crazy," said Adam Stolzberg, a contractor who worked at headquarters and was in meetings with Hasson a couple of times a month. Politics never came up, Stolzberg said.
It was only after Hasson's arrest last Friday at his workplace that the chilling plans prosecutors assert he was crafting became apparent, detected by an internal Coast Guard program that watches for any "insider threat."
The program identified suspicious computer activity tied to Hasson, prompting the agency's investigative service to launch an investigation last fall, said Lt. Cmdr. Scott McBride, a service spokesman.
Hasson was arrested on gun and drug charges after officials with the Coast Guard Investigative Service and agents with the FBI in Baltimore began probing activities that prosecutors said in court were linked to what they described as Hasson's white-nationalist views. Federal law enforcement officials seized a stockpile of guns and ammunition from his basement apartment in the Maryland suburbs near Washington in the far east side of Silver Spring in Montgomery County.
"The sheer number and force of the weapons recovered from Mr. Hasson's residence in this case, coupled with the disturbing nature of his writings, appear to reflect a very significant threat to the safety of our community, particularly given the position of trust that Mr. Hasson held with the United States government," U.S. Attorney for the District of Maryland Robert K. Hur said Thursday after a hearing in which Hasson was ordered detained.