2 ufos. One flashing light followed by what appeared to be a cylinder with a straight line of lights sort of hovering

Saw flashing light in sky. Did not move and then shot upward. 2 dark planes with red flashing light flew on either side of this thing and then flew away. The flashing light then started traveling into the distance laterally not further into space. THEN looking back in the original direction my boyfriend and i see a line of Green lights hovering just above our tree line in our backyard. We are awestruck and just stare at it until it starts to move in the same direction the flashing light went until it disappeared from sight.