A person in a yellow safety jacket, brown pants, gray work boots, and yellow gloves is standing on a concrete staircase and using a teal-and-black power tool with a chisel bit to chip away at the concrete wall. The person is holding the tool with both hands and pressing it against the wall, causing small pieces of concrete to break off and fall onto the stairs. The staircase is unfinished, with rough concrete surfaces. The wall is also concrete, and has some markings on it. The person is working near the edge of a step.