I work for an airline in Atlanta. I was outside on one of the gates when for some reason I looked straight up. There were two white ball looking objects floating directly over head.I looked at my fellow employee and said ” What the …. is that?” They could not id them either. I ran and got a buddy of mine and before long there were about 5 or 6 of us looking at theses objects.They looked like white balloons kind of but did not act like balloons. They staid the same distance apart from each other and moved in the same direction together opposite of the clouds. One observer watched them go up in altitude and come back down. There is no telling how many people actually saw them. Another witness said they say a small plane fly across and above the ramp area towards the objects and they disappeared.