There are many synonyms for the term "first on the scene", which means to arrive at a situation before anyone else. Some common alternatives include "first responder", "initial arrival", "front line", "pioneer", "trailblazer", and "early bird". Other synonyms that have a similar meaning include "trailbreaker", "groundbreaker", and "trendsetter". These terms are often used interchangeably, depending on the context and the tone of the conversation. Regardless of the words used, the intended message is clear: being "first on the scene" is an important and impactful position that requires a quick and decisive response.