User blog comment:CocoonOne/Take off of the XB-0/@comment-1476628-20120802032326

VTOL-like abilitys as the P-1112 Agaion could actually stop in mid air. However XB-0 is the foundation of P-1112 Agaion and heres my opinion:

Similiar to the two flying fortresses in ACX2 van cleaarly go up and down standing still. So my guess whould be a engine that has enough thurst to lift that infernal thing up. However thats just me.