Breaking the East Wind: (What is probably) Another Test of SM-3 Block IIA Causes Minor UFO Panic on US Coast

http://sanfrancisco.cbslocal.com/2015/11/07/reports-strange-mysterious-lights-in-skies-over-california/

Some clues:

http://thediplomat.com/2013/04/the-df-21d-or-carrier-killer-an-instrument-of-deception/

http://missilethreat.com/missile-class/sm-3-block-iia/

UPDATE: USN now says it was a Trident SLBM readiness test. We're going back to the aliens theory...

http://www.slate.com/blogs/bad_astronomy/2015/11/07/california_mystery_light_trident_missile_test_seen_by_thousands.html