The Bomb is a gameplay objective featured in Battlefield 4 as apart of the Obliteration and [Defuse]] gametypes. They spawn one at a time in random locations around maps and are used to destroy a team's target.
The bomb emits a periodic beep and red strobe, the latter of which clearly illuminates the bomb carrier's view in first-person view.
Like the flag in Capture the Flag, the bomb's location is displayed to all players, and its status is displayed as a title in the upper-third of the screen and as HUD icon. Possession of the bomb is also shown above the minimap.
The bomb must be picked up on foot, and is only dropped when the player carrying it is killed or reaches an enemy M-COM. The bomb is buoyant—a bomb dropped in open water will float at its surface. If a dropped bomb is not picked up in 30 seconds, it is removed from battle and a new bomb will appear at the spawn area to replace it.
When a bomb is carried, enemy M-COM stations appear with arrow marker icons. If an enemy is carrying the bomb, the team's own M-COMs will appear with shield icons. Upon reaching an enemy M-COM, the bomb carrier is able to plant it (by holding), arming the objective. The enemy team has 15 seconds to defuse the bomb or they lose the control point. When the bomb explodes, it may kill anyone nearby, friendly or foe. Some time after an objective is taken, the bomb will reappear in a respawn area.
The Bomb spawns in the middle of a map and is used to arm enemy M-COM stations by the attackers. As players do not respawn in the mode, the bomb will not disappear after a certain amount of time if not picked up.