looked like red balls of fire /Downers Grove

there were 2 like red balls of fire hovering in sky about the height of where helicopters might be when searching for ....whatever...spotted at !2:50 a.m.in the east part of sky near Ogden/Fairview Avenues for about two minutes while walking dog....saw for about two minutes...then when I got close to home, they could be seen near Fairview and Whitlock Park. I ran into home and asked my wife to come out and look at the sky....for approximately four to five minutes we saw them...the bright red firey looking balls...two, then four of them. We called the police...of course they were gone when the policeman came...we are pretty darn sure that the policeman thought...aha... we were two old geezers...or on something...which of course we are two old geezers but definitely not on something.... if he too had seen something, what could he have done...nada...but what in the heck were they?