the leviathan is a prototype heavy/strategic/nuclear bomber that is extremely effective with its task, the bomber and the bomb were made separately to allow the bomber to use other loadouts. the bomber was designed to have a massive bomb load allowing more loadings and allow versatility while the bomb is made as a cluster bomb which is made to decimate a large area of land. controls are like this: vtol-bomb bay doors,1-activate cluster bombs,2-activate bomb parachute,3-drop bomb.
P.s. the first pic may not be as appealing, but this is actually the convoy mission. The bomb was able to destroy the entire convoy with swift efficiency and allow the plane to survive unscaved. However the bomb took a lot of parts so it confused the game and I failed the mission.