National Nuclear Security Administration

NNSA to Conduct Aerial Radiological Surveys Over Washington, D.C. and Baltimore, MD Areas

May 4, 2015

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WASHINGTON, D.C. AND BALTIMORE, MD – A U.S. Department of Energy National Nuclear Security Administration (NNSA) helicopter may be seen flying at low altitudes around the Washington, D.C., and Baltimore, MD areas from May 6 – 22, 2015.  The purpose of the flyovers is to measure naturally occurring background radiation.

A twin-engine Bell 412 helicopter, operated by the Remote Sensing Laboratory Aerial Measuring System from Joint Base Andrews, will be equipped with gamma radiation sensing technology. The helicopter will fly in a grid pattern over the area at 150 feet (or higher) above the ground surface, at a speed of approximately 80 miles per hour. The flights will take place over various portions of the Washington, D.C. and Baltimore, Maryland metropolitan areas.

The flyovers are part of a research project sponsored by the Department of Homeland Security’s Domestic Nuclear Detection Office (DNDO). The background data will be used by DNDO to improve aerial radiation measurement capabilities used by local, state, and federal entities.

Established by Congress in 2000, NNSA is a semi-autonomous agency within the U.S. Department of Energy responsible for enhancing national security through the military application of nuclear science. NNSA maintains and enhances the safety, security, reliability and performance of the U.S. nuclear weapons stockpile without nuclear testing; works to reduce global danger from weapons of mass destruction; provides the U.S. Navy with safe and effective nuclear propulsion; and responds to nuclear and radiological emergencies in the U.S. and abroad.

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