I was in the back yard of my residence. i noticed a large turkey vulture in the sky south-south west of me, then noticed the object (bright white/pulsating) a good deal above it and further south-southwest at about 33 degrees above my home. i checked my watch, and noticed the time - 1412 hours; the object proceeded to hover in a more southern direction and began moving away, when it seemed to be sending some type of alternating code from the pulsating light. it appeared to emit the light (the entire craft). the craft then proceeded to move in a more eastern direction, and began moving away, continuing its pulsating code - which seemed to affect my psyche - attempting some kind of communication i wondered? it was due east by this time (1420 hours) on my watch now; still maintaining that constant beaming pulsating bright white light, at this point...I realized i had not taken any readings (magnetometer, compass, camera, audio, etc.) so i called my son out to the patio to verify my sighting. nolan (my son) indeed indicated visual on th e said white circle/object - which was now quite a bit due east, and moving away around 45 degrees. time on them watch was 1435 hours; interesting, strange and perhaps a government uav? i just wish t o report it. thank you for letting me share th is information. sincerely, paul gafner tustin, ca / 11-9-17 thank yo u, for this