Black Triangle Sighting in Reading, Pennsylvania on 2017-08-11 09:35:00 - Triangular in shape smaller than the 2 military jets escorting the craft. about 1/3 in size

I was on large open parking lot smoking a cigar and noticed what appeared to be three jets in tight formation heading north from the reading pa area towards hamburg pa. two of the jets where the same and it appeared that there was a large drone size jet in the middle. as the jets passed the third smaller craft just disappeared. the two flanking crafts seemed to stay on the same course and trajectory until out of sight.