Strange encounter

I was working on some flower photography over a bush, I thought I heard an animal sound but I ignored it. I turned around and felt there was someone behind me. Turn around, I found 4 raccoons sneak up on me. I took my flash and lower myself down gently. They were scared by the first few flash but eventually got used to it. I was told that they are aggressive creatures so I didn't let them get too close, just balancing on the power relation between two parties. No sudden movements, no sign of backing out. They got bored and moved on to their food search, breaking and chowing on pretty much anything on their way. Finally they jump to my neighbor's side. I then remembered the sound I heard on the roof for a few nights. I hope if they do come back they will be willing to do another photo shoot~