Final answer:
The technique called 'pie-ing the room' is used to clear most of a room without entering. It involves slicing the room into visible sections from outside the doorway and is a cautious approach compared to dynamic entry.
Step-by-step explanation:
The technique taught to clear the majority of a room without entering into the room is referred to as ‘pie-ing the room’. This is a tactical method used primarily in law enforcement and military operations. The term ‘pie-ing’ comes from the pie-slice sectoring of the room that is achieved as an operator slowly moves around the doorway from the outside, utilizing the door frame as cover while visually clearing as much of the room as possible. This technique minimizes exposure to potential threats that may be inside.
Pie-ing the room is typically done with a firearm ready to engage any targets, and it requires the individual to maintain a proper stance, keep their weapon at a high ready position, and methodically slice the room into sections which are cleared one at a time. Unlike dynamic entry, where a team would enter a room quickly to overwhelm an adversary, pie-ing is a more methodical and cautious approach that can be used when there is no immediate urgency to rush into a room.