Replace the question mark with a number

International Firefighters' Day (IFFD) is observed on May 4. Check out some firefighters jokes.

What happened to the firefighter who wasn't doing well in his job?
He got fired!

Daddy, which letter firefighters hates the most?
R, son.

What do cops and firefighters have in common?
They both wanted to be firefighters.

Firefighters go to rescue a woman from an upper floor of a burning apartment building. The firefighters say look, we have two ways to get you out. We have this new technology that allows us to form a fireproof slide that can take you down the stairs. Or, you can just come out the window with us and go down the way we've always done it.
The lady says, "The former seems interesting, but I think I'll choose the ladder."

Working from home sucks...
....if you’re a firefighter.

Little Johnny's preschool class went on a field trip to the fire station.
The firefighter giving the presentation held up a smoke detector and asked the class:
"Does anyone know what this is?"
Little Johnny's hand shot up and the firefighter called on him.
Little Johnny replied: "That's how Mommy knows supper is ready!"

Firefighters recovered just the bottom of one shoe after the shoe factory burned down It was the sole survivor.