He was educated at Brown University and earned his masters and Ph.D. degrees from Johns Hopkins University, where he later worked as an adjunct professor of European studies for several years while also working at the State Department.
Myers married the former Maureen Walsh in 1964. He later married Gwendolyn Steingraber in 1982. It is not currently known if they have children.
Investigators had kept tabs on the Myerses for several years, but ramped up their case in April of this year, when an undercover FBI counterintelligence agent posing as a Cuban representative approached Kendall Myers.
The undercover source met with the pair in various hotel lounges and rooms in Washington, D.C., and during the meetings, the couple allegedly made incriminating statements detailing their knowledge of spy operations and acknowledging past spy activity.
According to the affidavit, Kendall Myers stated that he and his wife "don't think we are able to do the work again ... [because] we're a little burned out," and that they "lived with the fear and the anxiety for a long time ... and still do."
They allegedly said that they were enjoying spending more time together during retirement, and expressed a desire to be part of a "reserve army."
But if convicted on the charges against them, they could instead face up to 35 years in prison.