Busch, the 2004 Sprint Cup Series champion, said Driscoll asserted many times that she was a trained assassin and per the AP, she hasn't disagreed with the statements in her testimony.

Busch said Driscoll repeatedly asserted her assassin status and claimed the work took her on missions across Central and South America and Africa. He recounted one time when the couple was in El Paso, Texas. He said Driscoll left in camouflage gear only to return later wearing a trench coat over an evening gown covered with blood.

A day earlier, Busch said his ex-girlfriend told him she was a mercenary who killed people for a living and had shown him pictures of bodies with gunshot wounds.

"I find it interesting that some of the outlandish claims come straight from a fictional movie script I've been working on for eight years," Driscoll added.

Driscoll runs the Armed Forces Foundation, which is set up to benefit United States soldiers. She's also involved with Frontline Defense Systems, which is a defense contracting company.