First thought was that it was a hand-held military flare (from military experience) Height, size, and brightness was very similar to a green flare.
Location
Address
McLean, VA
Latitude
38° 54' 19.5'' N (38.905418°)
Longitude
77° 9' 25.18'' W (-77.156994°)
Elevation
138.47847m
Time and Duration
Local Date & Time
2014-02-27 19:08 EST
UT Date & Time
2014-02-28 00:08 UT
Duration
≈1.5s
Direction
Moving direction
From up to down
Descent Angle
180°
Moving
Facing azimuth
240.66°
First azimuth
240°
First elevation
50°
Last azimuth
240°
Last elevation
30°
Brightness and color
Stellar Magnitude
-20
Color
Green changing to blue adn then fading out (brighest and round at the top when I first spotted it - like a signal flare that dims and traills out as it falls)
