Odd chemtrail and jet formation over souther Rhode Island

I have been watching the sky a lot lately, due to earlier and more numerous UFO sightings in my area. 
At the above date and time (approx.), on a clear, sunny morning, I heard the sound of a jet(s).  I looked up to the point of that sound and saw four chemtrails, very obvious and very high in the sky, all close together, as if from one plane with four jet engines.  Through my binoculars I saw, rather, four tiny objects extremely close to one another producing these enormous chemtrails.  The objects, of what I can say were chevron shaped, and silver, traveled at a faster pace than an airliner, heading SW, and at an altitude,  I would guess, of 15 to 20 thousand feet.   What struck me as very odd was the precision of these four small craft and the much larger chemtrails they produced.  They were so precise in there close proximity to one another and produced identical chemtrails that it appeared to be one object, like the four engined jet that I first thought it was.  However, I did see through the binoculars that they were four distinct objects.  The only time I have ever seen this procession was from watching the Blue Angels air show in Rhode Island many years ago.  There has been a lot of strange air traffic in Rhode Island recently and this only adds to it.