Sitting out by a bonfire in an area near a highway and inter-county bike trail, a few friends and I observed 4 low flying fireball craft that seemed to follow the highway. They flew low and slow, at just above the treetop elevation *approx 50-100ft* - for about 4 minutes... 2 went to the ground abruptly and got BRIGHT - BRIGHTER THAN THE SUN bright..... it looks like the woods were on fire. The other fireballs rotated around the spot in the woods as if providing support.. in less than five minutes that ordeal was over and they flew slowl;y towards us and my friend's shed area.. Flew over us and over the horizon at approx 20mph?? Prevailing winds were out of south, entire object ravel was north-northeast.This morning, a girl and I went down the bike path to where they were... the place felt HOT (ambient temp was sub 40* F) and there were two goats on the trail, mutilated... only sharing 1 pic, the other looks like it got ht by a car at hundreds of miles per hour - we found the head and its the only discernible piece of the animal. Local law enforcement were called, and we were laughed at. I know they've seen the spheres, they witnessed them on 7/3/2012 ((sic. 2011)) at the fireworks display in Eldorado, which has been posted before. State police were contacted and apparently dispatched some units to the location. Never saw them; Left within the hour of ISP contact