Silver Sphere Hovering above treeline on Interstate 65 N.

Friday, July 1978 1:00 P.M. My father and I were driving a U-Haul truck.  We were returning an empty U-Haul truck to Tullahoma, TN.  We were moving from Tullahoma TN to Athens AL.  We had just Accessed Interstate 65 N from AL State Hwy 72.  We had just passed a roadside welcoming center on the left of the interstate going toward the Tennessee State line.  About 1:00 p.m., I looked up and above the tree line on the right side of the hwy was a huge silver ball.  It was a hot sunny clear day not a cloud in the sky.  I said to my father, "Hey, look at that!"  He said, "It looks like a weather balloon."  I said, "No it is not!"  We argued about it.  We studied it for a little while and then stopped the truck.  We got out to look at it were we had a good view.  As we were debating, If it were a weather balloon or not, a door slid open in a downward motion near the bottom of the object.  We stood motionless watching!  We stood there in silence.  A smaller silver ball came out of the opening and went to our right.  Then as second came out and went to our left.   They both hovered there for about five minutes.  The small silver ball that came out second returned to the opening first.  Likewise the first went back in the opening.  The door shut slowly.  It sat motionless for a few more minutes.  Then began moving slowly toward the NE.  Suddenly with incredible speed it went upward and to the NE out of view.  My father and I in silence got back into the truck.  We said nothing to one another.  My father spoke first.  He said, There is no sense in telling anyone what we have seen.  No one would believe it anyway."  We continued on our journey in silence.