His background is from The Way International. Rood is neither associated with the Karaites
shalom b'SHEM Yah'shua HaMashiach
nor the Messianic movement.
He left that organization when he realized what they were about, as he explains in the video available at his about page (it is lengthy however):
http://aroodawakening.tv/about/
Thank you for helping to clear up the other!
And Michael Rood has light...
Zechariah's Thermonuclear War
Michael Rood
http://www.wwyd.org/Prophecy/Rood_ZechScrolls.htm
A must read...