A former nuclear engineer officer in the U.S. Navy and his wife have been arrested on espionage charges after allegedly attempting to sell secrets about submarines to a foreign entity. Jonathan Toebbe and his wife, Diana, sold restricted information concerning the design of nuclear powered warships to someone they believed was a representative of an unnamed foreign power. The department says Toebbe unwittingly communicated with FBI agents and passed along sensitive military secrets in a scheme that stretched more than a year. Toebbe held an active national security clearance through the Department of Defense, giving him access to restricted data. Toebbe allegedly agreed to provide data in exchange for thousands of dollars worth of cryptocurrency. On Tuesday, the couple is scheduled to appear in federal court in Martinsburg, West Virginia.