An Officer and a Firetruck...and an Ambulance too

If anyone who lives near me saw the commotion that went on this morning, it would be my fault. Why? Because while I was trying to get my girls ready to go to Melissa's (who is so wonderful and watched my kids while Jana and I went on a photo shoot) I heard some voices outside and peeked out one of our upstairs windows. To my shock and annoyance, I saw the teenage neighbors to the east of us (the rental house) trying to light a pile of garbage on fire not more than 18 inches from our fence. I observed them for a few moments and when they got out the lighter fluid, that was enough for me to get on the phone and call the police. Now, let me explain that I had an aunt who died when she was 5 because some neighbor boys were lighting matches and throwing them into a garbage can. One of them missed and caught my aunt's dress on fire. She suffered severe burns and died in the hospital 6 weeks later. Playing with fire has never been a laughing matter to me. Not only was I nervous about my fence catching on fire and then my house, but those boys could have seriously hurt themselves as well.
Anyway, back to my phone call. I dialed 911 only because I don't know the number for the police department. The dispatcher asked where I was and what was going on and I simply asked for her to send a police officer out to the house, thinking that he or she would tell the kids that they were being stupid and dangerous. About 2 or 3 minutes later I'm still observing the boys, watching them throw more stupid crap into their small fire, when I hear the sirens. They obviously heard them too, because they took all their stuff and ran to the backyard trying to hide the evidence. (I think the fire at that point had almost burned out.) Then I see a Firetruck driving down the street, followed by an ambulance. At this point the boys were going about their work, (I think they were supposed to be cleaning out the garage) pretending they had no idea why a firetruck was in front of their house. I then went outside and told one of the fireman that they took all their "evidence" into the backyard and he said they would take care of it. To be perfectly honest, I felt a little dumb at this point, hoping there wasn't someone somewhere with a real emergency who needed help. I guess I could have went out and said something to the boys before I called, but I honestly don't think they would have listened to me and who knows what they would have done to my fence after that? Maybe I should have given them the benefit of the doubt, but it's not the first time we've had a problem with these neighbors.
After about 10 minutes, maybe less, the mom came home and went into the backyard. I could see her asking the firemen and officer what was going on and then I could tell she was yelling at one of the boys. After everyone left, I was in my living room and could hear her yelling at them. I actually felt bad for them because it was my fault they were getting yelled at. I think the younger boy, who is probably around 11 or 12 was crying. I wondered if she was going to come over and say something to me, but she hasn't. I almost feel like I need to apologize for maybe overreacting, but like I said earlier, playing with fire is something I don't take lightly.
For those of you who live near me, have no fear, if I see your kids playing with fire, I will definitely call you first! :-)