An unexpected triangular object with light flames surrounding it appeared near my balcony in Florida before heading out to sea.

The object was a large steel colored triangle with circles at the very tips of the two corners. There was a line down each side appearing engraved.  There was glaring bright light flames coming from around it almost blinding.  I was sitting on my ninth floor balcony on the ocean when it approached. After about seven seconds or so it left and went across the ocean having one blinking red light behind it.  The glaring bright lights were no longer on. I watched until it was out of sight moments later. It appeared to either go into the ocean or just disappeared. I questioned a few residents at the pool the morning to see if anyone else saw it but nobody did.  I informed friends and family up north via text and telephone communication.  I drafted an informal drawing of what I saw even though I’ll never forget it.  I’m a seasonal resident in Florida and a Rhode Island resident.  I’m 69 years old and a practicing attorney in Massachusetts.