Fast moving fireballs with visible flame patterns looking like little fading out suns.Two fireballs moving east to west in an arc type of motion and appeared larger as they traveled due to the fact we were west of them. Looked as if they came through a rift of sorts. First two appeared about 20 seconds apart one then the other. It looked as if they were in flight at Approx the curvature of the earth. First two were visible for 6/8 min before fading out and then the third appeaed approx 1 min before the 4th. They were very large at about the size of a baseball diamond and silent due to the great distance they were from us.((NUFORC Note: Source of report indicates that the date of the incident in June 2013 is approximate. PD))