I saw 3 orange illuminated triangles flying very low between 2 apartment buildings, just above the trees.

I left my apartment to go to the laundry room. I was walking and turned the corner, and there was 3 illuminated orange triangles, flying in formation.  One in the front and two on the rear, forming like a triangle. But they were 3 seperate triangles.  I noticed them quickly, because they were so low to the ground. About two of the apartments stacked high. 50 feet up (or low).  They moved slowly and silently towards a church between the two buildings I was standing between. They slowly turned around and slowly came back towards me (with my mouth wide open) and then they slowly got higher and then they shot off and disappeared.  They had to be traveling at the speed of light. 45 minutes after the one of the wildest things I've ever experienced I went back outside and I saw 3 small engine planes flying around the area(within 2 miles). I don't know if somebody else saw but someone had to have.