I was traveling on I-95 north through CT. To my right, out above the water, I saw a row of 5 hook-shaped contrails appearing from nowhere. I watched for a couple of minutes as they traveled by me. I then thought to grab some pictures with my iPhone 7.

These contrails appeared to be about a 1/4 mile across.  The row of 5 appeared exactly at the same time.  The would stop, or skip, periodically in no apparent pattern.  They would then suddenly begin again.  They ended up moving away from to where I could no longer see them appear.
I have seen airline contrails in the past.  Even the highest planes were still visible.  The contrails were always one continuous line of vapor.  These today seemed to pulse.  All 5 across appearing from nowhere.  
You can reach me at ((e-address deleted)) or 484-((telephone number deleted)).  I have video and photos.
The high-quality photos provided by the witness indicate to us that the contrails probably were formed by five "sky writing" aircraft, flying abreast.  Not a UFO.  PD