Which powered rescue tool is specifically designed with at least one movable blade for cutting?

The cutter is specifically designed with at least one movable blade for cutting. This tool is an essential part of any rescue operation where structural elements must be severed to free trapped individuals from vehicles or debris. The movable blade allows for precise and efficient cutting capabilities, making it ideal for scenarios where quick access is critical to patient survival.

The spreader, while a vital rescue tool, functions differently; it does not have a cutting element but is used to pry apart objects or create space. The extension ram is primarily designed to push or extend, allowing operators to create openings or maintain space between structures. The combination tool, although versatile and capable of both spreading and cutting, describes a multi-functional device that incorporates features of both the cutter and spreader but does not solely focus on the cutting function. Therefore, the uniqueness of the cutter in having at least one movable blade distinctly sets it apart as the correct answer.