Glowing spheres over North Little Rock, Arkansas.I was having a cigarette on the back patio of a local pub when the incident occurred. It is important to not that I was not inebriated at the time. Nor do I believe the individual who first spotted the objects had been drinking.I was engaged in conversation with this gentleman when he exclaimed, "what's that," and pointed to the east. Looking up, I saw what seemed like a fireball in the sky. My first impression was of a burning airplane. The 'flames' seemd to subside, leaving the object with the shape of a sphere, glowing with an fiery orange color. I soon made out several more such objects.Given the position angle of the objects and their relation to surrounding buildings, I would estimate their size at about six feet in diameter. I would estimate their heading at about 340 degrees.Their speed would probably have been about forty miles per hour. There were about six of them, and they were in a staggered line. They emitted no sound. They also seemed to have mass; ie they were not merely light. They travelled in a staggered line. There was no wind.The objects continued on their north-northwest course, maintaining their altitude. They were followed by another group of identical objects about a minute later.We continued looking at them until they had travelled a mile or so. As the lights reached some unmarked terminus, they seemed to extinguish one at a time. But I could still make out some of the objects. They looked almost like giant glass spheres with a smoky iridescance. I continued looking until the second group reached the same area, ceased to glow orange, then disappeared from view.There were a couple of other people watching on the patio. I was too engrossed by what I was seeing to pay much attention to them during the incident. Afterward, we speculated as to what we had seen, but could reach no logical conclusion.I have been unable to find anything in the news regarding the incident. I even spoke with a couple of police officers to see if they had heard any bizarre radio traffic during the time in question. They were polite, and did not treat me like some lunatic, yet told me they had heard nothing.Note for clarity: I was in North Little Rock at the time of this occurrence. Do not confuse that with the northern section of Little Rock. North Little Rock is its own city across the river from the Capitol City.