Triangle chevron shaped with fixed lights flying low and fast it disappeared into thin air

We were watching the meteor shower when I saw what looked like a formation of birds just above the apartment roof. I turned to my friend I said “wow it’s late for formation of birds that’s crazy“ at that point the craft took off so fast. It jetted away in less than a second as if into thin air. It looked like lights flying in formation. All the lights outside were flickering and we heard inhuman screeching. Moments later a jet flew where we had just seen the craft as if it was chasing it