Which of the first responders can perform only defensive tasks?

In emergency response scenariOS, typically, firefighters and police officers can engage in both defensive and offensive tasks. However, certain roles such as emergency medical technicians (EMTs) primarily focus on providing medical care and support, which can be seen as defensive in nature, as they do not engage in active combat or law enforcement activities. Additionally, some specialized units, like certain types of rescue teams, may also focus exclusively on defensive tasks, prioritizing the safety of victims and themselves over offensive measures.