To capture a building, attackers must remain inside the Flag Building until the capture bar has hit 100%. If more than one player (up to eight) are inside the flag building, the bar will move faster. Additional attackers past the eighth have no effect on the capture speed. Defenders must kill all attackers in the flag building to start liberating the facility. Any attackers who enter the building (even if it is currently being liberated) start the capture bar moving up again. Capturing a flag gives the attacking side control of the corresponding building linked to the Office. If the Office links to a Depot that has a link to a friendly town, the Depot is referred to as "Spawnable" and players may spawn from new missions there, making them an important objective. Players may also despawn near a friendly depot and respawn inside it, called "Warping". This allows attackers to set up a Mobile Spawn Point near a non-spawnable depot and warp directly into it, avoiding any heavy defenses around the spawnable depots.