Planning is often an important part of the game: fuel consumption is unrealistically high (to adjust for a limited game world), and the player can rarely lift off with full fuel and the best weapons loaded. Terrain and enemy presence are also to be considered (the intel briefing may often tell the player what to expect near targets). Usually a Forward Arming Refuel Point (FARP) is present in the mission. This is important, as the player may have to refuel or rearm during the course of the mission depending on the density of enemy and distance to objectives.