According to their website, the NGA’s mission is the following:
The National Geospatial-Intelligence Agency (NGA) delivers world-class geospatial intelligence that provides a decisive advantage to policymakers, warfighters, intelligence professionals and first responders.
Anyone who sails a U.S. ship, flies a U.S. aircraft, makes national policy decisions, fights wars, locates targets, responds to natural disasters, or even navigates with a cellphone relies on NGA.
NGA enables all of these critical actions and shapes decisions that impact our world through the indispensable discipline of geospatial intelligence (GEOINT).
NGA is a unique combination of intelligence agency and combat support agency. It is the world leader in timely, relevant, accurate and actionable GEOINT. NGA enables the U.S. intelligence community and the Department of Defense (DOD) to fulfill the president’s national security priorities to protect the nation. NGA also anticipates its partners’ future needs and advances the GEOINT discipline to meet them.
In February of 2016, The Black Vault obtained a collection of investigations by the Office of the Inspector General within the NGA. Although names and identifying information is redacted, you can see the amount of misuse that is going on.
NGA/IG Closed Investigations, 2013-2014, regarding, “Misuse of Government Information Technology” [117 Pages, 9.5MB] – My original request was amended to include only the “Executive Summaries” since my original request yielded many responsive pages.