NASA PLANS AIR POLLUTION FLIGHTS OVER MARYLAND ON JUNE 30

If you see planes around the Baltimore/DC area today here's why:
NASA PLANS AIR POLLUTION FLIGHTS OVER MARYLAND ON JUNE 30
WASHINGTON -- NASA's DISCOVER-AQ air quality field campaign is scheduled to take to the skies over the Baltimore-Washington traffic corridor on Thursday, June 30, from 9 a.m. to 1 p.m. EDT as part of a mission to enhance the capability of satellites to measure ground-level air quality from space.
DETAILED FLIGHT MAP: Of the P-3B's low-altitude flight path is available at: http://go.usa.gov/ZiP
For more information about the DISCOVER-AQ mission, visit: http://www.nasa.gov/discover-aq