Craig Lane in an undated photo.
Smith was arrested on Sept. 21, and he allegedly admitted to the FBI that he provided people online with instructions for building bombs.
According to charging documents, at least one of the instructions he allegedly provided in recent days would not have resulted in a viable explosive device.
He has been charged in Kansas with distributing information relating to weapons of mass destruction.
Lang, meanwhile, is currently facing federal charges in Florida, North Carolina and Arizona in separate cases with alleged ties to -- among other things -- a murdered couple in Florida, the terrorist group al-Shabab in East Africa and groups fighting against the Venezuelan government.
According to court documents filed in those cases, in 2017 Lang met another Army veteran, Alex Jared Zwiefelhofer, in Ukraine, where they both fought with the Right Sector. And then in June 2017, Lang and Zwiefelhofer traveled to Kenya because they wanted to fight the al-Qaeda-linked group al-Shabab there, Zwiefelhofer allegedly told authorities. But when the pair then allegedly tried to enter South Sudan, they were stopped and sent back to the United States.
Lang had failed to pay outstanding child support payments, so his passport was canceled.
Almost a year later, in April 2018, Lang and Zwiefelhofer allegedly killed a husband and wife in Lee County, Florida, during an armed robbery. In court documents, authorities said Lang and Zwiefelhofer committed the robbery to fund travel to Venezuela, where they wanted to participate in armed conflict against the Venezuelan government.
But, faced with a revoked passport, in August 2018, Lang and three others met at a hotel in Roxboro, North Carolina, where they allegedly devised a plan: Lang would give one of the men guns and money in exchange for using his personal information and documents to obtain a passport in that man's name, court documents allege. A passport in another man's name would allow Lang to evade law enforcement while traveling overseas en route to Ukraine, authorities said in court documents.
On Sept. 11, 2018, Lang gave the man a suitcase with four pistols, a military smoke grenade and about $1500 in cash, and within a week Lang bought a plane ticket to Ukraine using the man's identity. But then Lang used an altered version of his original revoked passport to obtain a Mexican visa, and by late September 2018 he went to Mexico and then Bogota, Colombia, according to court documents.
On Nov. 23, 2018, he departed Colombia for Madrid, Spain, and, "It is believed that LANG used this revoked passport … to gain admission to Ukraine," court documents said.
"He is currently living in Ukraine," another court document noted.
Lang has since been indicted in Arizona on one count of misuse of a passport. He and three alleged co-conspirators were indicted in the Eastern District of North Carolina on nine counts of identity theft- and fraud-related charges. And he and Zwiefelhofer were most recently indicted in the Middle District of Florida on four counts for the armed robbery that left two people dead.