Operation Touchdown involved a Navy Master-at-Arms, Wilfredo Garcia, attempting to sell classified Navy documents to representatives of a foreign government. This espionage scheme led to a number of classified documents containing information on submarine activities being taken to the Philippines for sale to foreign entities. NIS agents were able to recover the documents before they were sold. Garcia was found guilty of espionage, conspiracy to commit espionage, larceny, conspiracy to commit larceny, sale of government property, and violations of military regulations in 1988. he was sentenced to twelve years in prison.
(From: https://www.dhra.mil/PERSEREC/Espionage-Cases/navy2/)
The Counterintelligence Chronology by