In what scenario would using a laser for alignment purposes be dangerous?

Using a laser for alignment purposes can be particularly dangerous when reflective surfaces are present within the beam path. This is due to the potential for the laser beam to reflect off these surfaces, creating unintended pathways of the beam that could lead to exposure of the eyes or skin of individuals in the vicinity. Reflected beams can travel in unexpected directions and could hit targets that were not originally intended, increasing the risk of accidental exposure.

In contrast, poorly lit spaces may cause difficulties in visualizing the laser's path, but it does not inherently increase the danger of the laser itself. Routine maintenance checks typically include safety protocols that aim to reduce risks, and low-powered lasers, while still requiring caution, pose a significantly lower risk compared to high-powered lasers. Thus, the presence of reflective surfaces directly contributes to increased risk during laser alignment tasks.