Marc David Gonsalves (born 1972) is an American Northrop Grumman employee who was abducted by the Revolutionary Armed Forces of Colombia (FARC) and was held hostage from February 13, 2003, to July 2, 2008.

[2] Gonsalves served as an imagery analyst in the United States Air Force[3] for eight years[4] prior to becoming a contractor employed by California Microwave Systems, a subsidiary of Northrop Grumman.

By 2002, pilots began to worry about what they perceived to be the lack of power and speed of their planes – the single-engine Cessna Caravan – for a country as big and mountainous as Colombia.

Two pilots, Paul C. Hooper and Douglas C. Cocker, wrote letters in November and December 2002 to Northrop Grumman warning that flying single-engine planes was a recipe for disaster.

After two crashes, which temporarily halted the program, Northrop Grumman resumed the operation under a different name, the Colombia Surveillance System, using twin-engine planes.