On Chicago Fire Season 2 Episode 15, Jones made her presence known at 51.
Sadly, first impressions are not her strong suit.
Jones wants to be one of the guys and I can understand her reasoning for doing so. She wants to be treated just like everyone else and she doesn't want gender to play a part in it.
However, Jones is not a firefighter yet. She needs to work her way up to getting to that level. Right now, she's in a student-teacher dynamic with the firehouse. She's there to learn as much as she can.
Cracking jokes is one thing, and, in moderation, it's acceptable behavior. But there's an old guard to firefighting; candidates need to go through the motions and the mind games before joining the club. It is one part initiation, one part mental and physical dexterity the job requires - and a splash of hazing.