It has parts of the nostromo, well actually it is almost the complete ship with added extra's (and flying backwards by the looks of it) ^__^ Oh and would let those ships fly in formation, especially the large ones, they will cover each other with their gunturrets.

Robert van der Veeke Basugasubasubasu Basugasubakuhaku Gasubakuhakuhaku!! "Better is the enemy of good enough." Dr. Mikoyan of the Mikoyan Gurevich Design Bureau.