Final answer:
The 3 Musketeers are characters from Alexandre Dumas's novel and refer to the swordsmen Athos, Porthos, and Aramis, alongside D'Artagnan, and not the individuals described in the provided scenario.
Step-by-step explanation:
The group known as the 3 Musketeers is prominently featured in the world of literature, specifically in the novel 'The Three Musketeers' by Alexandre Dumas, which is set in the 17th century. The 3 Musketeers refers to a trio of daring swordsmen named Athos, Porthos, and Aramis, who are joined by a young aspirant named D'Artagnan. Together, these characters embark on various adventures, embodying the values and camaraderie of the time. While the description mentioning men in a boat, including an African American, a Scotsman in a checkerboard bonnet, and a man in a coonskin cap, suggests a scenario, it is not directly related to the 3 Musketeers. Instead, this description could pertain to a different historical or fictional context, suggesting the individuals are members of a militia, and it may require further information to provide a specific historical identification.