saw three lights moving quickly northbound in sky, joined soon by a 4th and 5th light

Three objects in a triangle formation were moving at a moderately slow speed, northbound above the tree line, visible if you were facing east. The three objects were most visible when they appeared to catch the sun's light but were still small dots that were still noticeable. As they approached the area of the sky near the roof of Gore, they were joined by a fourth and fifth object, and the formation seemed to change a little but not into any specific shape.
I am a full-time student (History Major) at Westminster College and had left the library when I saw the objects shortly before 5 pm on Saturday, February 19th. I was well-rested, hydrated, and thinking about dinner. At first, I dismissed the objects as mylar balloons but felt they moved in a way a little odd for balloons. I saw a woman walking towards me and asked if she could see what I saw. After I pointed them out, she noted she could see them but dismissed them as weather balloons.
I attempted to take a video of the objects in the sky and managed one photograph; though both are heavily zoomed in, the video is shaky and doesn't show much. The photograph shows two objects that look like dashes in the sky. The video is very short.
A small biplane did fly under where the objects were and were much larger in the sky, but I did not get a photograph of the small plane (it was flying south). I could not find any information on weather balloons in the sky for the area, and someone suggested contacting this site and leaving a report.