An aerial bomb is a type of explosive weapon intended to travel through the air with predictable trajectories, usually designed to be dropped from an aircraft. Aerial bombs include a vast range and complexity of designs, from unguided gravity bombs to guided bombs, hand tossed from a vehicle, to needing a large specially built delivery vehicle; or perhaps be the vehicle itself such as a glide bomb, instant detonation or delay-action bomb. The act is termed aerial bombing. As with other types of explosive weapons, aerial bombs are designed to kill and injure people and destroy materiel through the projection of blast and fragmentation outwards from the point of detonation.