Shiny metallic triangle that approached Military helicopter, with blue light on bottom and accelerated at incredible speed

While standing on my condo balcony looking out over the beach and ocean two military helicopters were flying by. I snapped three quick photos of the two military training helicopters that were flying along the beach at about 1000 feet out and maybe 1,000 feet altitude.
What is in all three photos is startling. Clear image of a craft that approached the lead helicopter and appeared to change rotation and possibly tag the Helicopter , then shot off to a distance of about a half mile in only a couple seconds. All three photos were taken in about 15 seconds.
I didn't see it at first with the naked eye and when taking the pics, But I immediately noticed it when I looked at the pics later. Its clear in the photos and its real. Alarming to say the least. I hope its one of our craft or we are in trouble folks.
Im open to talking with anyone that has info or may have seen this craft.
I contacted a few agencies and reporters but got no response. They dont seem to be concerned.