Final answer:
The colors of helmets for explorers and recruits vary, but in many U.S. fire departments, black helmets are used for new members such as explorers and recruits.
Step-by-step explanation:
The colors of helmets for explorers and recruits can vary depending on the organization and country. In many emergency services, including firefighting, different helmet colors signify different roles or ranks. For instance, in the United States, fire department explorers and recruits might often have black helmets, which distinguish them from more senior firefighters who may wear helmets of other colors like red, yellow, or white.
It's important to note that this can change from one department to another, and some may use stripes or other markings to denote rank or experience level. However, in general, black helmets could be associated with those who are newer to the service, such as recruits or explorers in training.