Non-Reg Single-Room Deep Entry
While shallow entry helps you avoid getting overly committed in the room and keeps you close to your path of escape, there are situations where you will want to clear the room completely. This is of particular importance in situations where you plan to remain in the room for an extended period of time, use the room as a safe area for family members, or if there is a lot of furniture in the room. Deep entry involves penetrating fully into the room, clearing behind furniture and ensuring no adversaries are hiding behind the door.
When conducting deep entry techniques, penetrate only as far into the room as you need to. The advantages of staying close to the door still apply. Therefore, unless there is furniture or dead space deep in the room, conduct your clearing movement relatively close to the door. As described earlier, you can also start by conducting a shallow entry and then move on to a deep entry once you have had time to assess the layout of the room and the situation.
When executing the deep entry, try to move as quickly as possible. You will be sacrificing some of your shooting accuracy in order to reduce your vulnerability. If there are multiple threats in the room, you will be extremely vulnerable as soon as you pass through the door and your best option is to move quickly enough so adversaries find it difficult to target you. Still, while speed is important, do not move so fast that you will trip over objects in the room or completely lose your ability to shoot accurately.
In most rooms, the furniture is located near the walls. Therefore, when conducting the deep entry and moving along the wall you may need to adjust your path or scan to deal with various furniture configurations. There are no fixed formulas or solutions, so use your common sense.