Vegas Mass Photoshooting Question: Painters Tape?

I have a full critical "fair use" analysis of these 2 full photos coming soon, which will be in context of the full scenes. For this post I mostly wanted to question the painters tape. Why would rolls of tape be available at the scene and what purpose would they be used for if they were brought in by emergency personnel or civilian house painters that happened to be nearby after the shooting? Were they wrapping wounds with jerseys and tape? I'm not saying there isn't an innocent explanation for this. I'm totally willing to believe there was a logical explanation for the tape and any evidence of a victim with a tape wrapped wound or makeshift tourniquet would go a long way in explaining this. I've determined these pictures are of the same location at different times.

The top picture seems to be first in the order of events. When the police first arrived on the scene. The next photo is full of people and appears to be taken some time after. Of course I could be wrong with the order, maybe the ice hadn't started melting yet in the lower scene. It would make sense that someone grabbed a roll of green tape from the pile. Anyway, I just wanted to point out yet another curious anomaly captured by the brave event photographer. My next post will question the full scenes in greater detail. There are many curious things going on in all these photos, too many to ignore. If you know why the tape might be there and where it could have come from, or if you can help explain some of the other things going on in these images, please let me know in the comments!