If you go to a school fair or a family fun day (ie an event specifically for children and families) do you think it's ok for emergency organisations like the fire, police and army to have a presence?
I say this because the many brave people who are employed by these organisations risk death in the course of their daily work.
Obviously bringing down a fire engine for children to climb into is not the same as a heavy recruitment drive, but all the same, recruitment has to be one reason why they are there. If asked, the firemen and women are going to talk positively about their work (I would imagine)and explain how to join up. Same for the army or for the police.
I have no set views on this, btw.