Three objects..bright white lights on front, alt. red/white on rear..no sounds..travelling from west to east in tri-angular or v formation

When first observed objects, thought were hot-air balloons...when closer clearly saw they weren't...watched objects for 45 minutes...no sounds heard at all...nearly passed directly over me...hard to tell how fast or how high because had no size reference...but believed objects to be about 100 ft or less and speed of 50 to 100 knots or so...after losing objects to the east, called office on radio and asked dispactcher to "step out of the office, turn to the north and look up...which he did...and saw objects fly over head...talked to Mich State Police Trooper...he told me several troopers chased objects but was too far away to get back to observe them himself... What were they?  I don't know...could've been anything...possibly military, but I don't know... I've always thought there was something to all these sightings...there are too many people seeing too many things to be just written off as mistaken identy, or others...I'm just not so sure...wish I'd have my cam-corder (which I now carry in my cab wherever I go)...