Mr Jameson allegedly named the San Francisco's Pier 39 as a target, an area popular for its restaurants, shops and resident sea lions, because "he had been there before and knew that it was a heavily crowded area".
Court documents said when undercover Federal Bureau of Investigation informants and employees began communicating with him in October, he praised ISIS and the deadly Oct. 31 truck attack on a New York City bicycle path. He also offered financial assistance to ISIS, offered to travel to Syria if needed, and said he was ready to die for "the cause".
He allegedly also professed support for the October 31 terror attack in New York City that killed eight people. The note also seemed to express anger over President Donald Trump's recent decision to recognize Jerusalem as Israel's capital.
Jameson was released from the U.S. Marine Corps for fake selection after it was found he neglected to uncover a dormant asthma history, the Federal Bureau of Investigation said.
Jameson received sharpshooter training in the U.S. Marines in 2009 before being discharged for "fraudulent enlistment" after failing to disclose the fact that he suffered from asthma, according to the complaint.
On Nov. 3, Jameson filled out a franchise tow truck driver application with the Modesto Police Department to be employed by a local towing company that has a contract with the city of Modesto, the complain said.
National Football League notebook: Four Patriots selected for Pro Bowl team
Making the Pro Bowl as a quarterback is extremely hard , given the talent across the league, particularly in the NFC. Defensive end Brandon Graham, center Jason Kelce and linebacker Nigel Bradham did not make the team.
Jameson said the USA needed "another attack like NY or San Bernardino", adding that he wanted to use vehicles and firearms to carry out an attack.
"We are grateful that our hardworking law enforcement partners remain vigilant in protecting our communities, especially during this holiday season", U.S. Attorney Phillip Talbert said in a statement.
"I likewise don't figure I can do this all things considered".
Authorities then carried out a search warrant of his home, where they found a handwritten note. Jameson said he also wanted to use explosives and that Christmas Day would be the flawless day.
Jameson told the agent that he could carry out the attack the week of December 18 through December 25, but that Christmas Day was the ideal day.
The agent said Jameson wanted to do a combination of the two attacks, referring to the use of firearms and vehicles.
She added, "We will not allow the thwarted attempts of one risky individual to disrupt our way of life".