When he went to his first/second fire, Mark was the first/second volunteer.
The man/woman whose house was on fire did not have an umbrella/any shoes.
Another volunteer was told to go inside/outside and find the homeowner's cat/dog.
A few weeks/months after the fire, the homeowner sent the firefighters an email/a letter.
Mark suggests the audience could serve drinks/food or help clean up a park/yard.