My only concern would be that something might happen like what happened at my house. My girls heard about calling 911 to get the fireman or the police to help. (This I didn't find out about until later.) So anyway, one night my husband and I are busy moving furniture around moving kids rooms and the police show up at my door. My DD had called 911, gotten scared when questioned and left the phone off the hook. The police were of course dispatched. Later that night after questioning my daughter we discovered that she couldn't find her "stuffy" and knew we were busy. She thought the police might "help".
I think you need to be age appropriate but honest. We got an age appropriate board book about police and fireman and their "jobs" and needless to say a board book about when to dial 911.
