Answer
The answer to this question is 1989. This was a failed coup d'état by Brigadier General Moisés Giroldi against then-President Manuel Antonio Noriega. Giroldi, a commander of the National Guard, attempted to overthrow Noriega in an elaborate plan that included taking control of the Panamanian National Guard headquarters and the country's international airport. However, the coup attempt was unsuccessful, and Giroldi was captured and executed by Noriega's forces.