Many films have one main film unit which does all primary filming and one or more smaller film units shooting additional "pickup" shots, stunts, or shots involving special effects. These shots are included with the main unit footage on the dailies reels. A typical pickup shot might be a simple shot of the exterior of a building that does not involve any actors and is filmed with a smaller crew to save time and money. If a unit shoots with more than one camera usually all the shots from one "A" camera will be followed by all "B" camera shots because of the way the dailies are processed.