Right after Gaines shoots Payaso, Michael tells Gaines that Payaso was no more than 14 years old but instead of staying serious while delivering his line you can see that Steven Bauer is trying to keep himself from laughing, with a huge smile on his face.
When El loco, and Payaso go out the window we see two swat members go out after them but when they show the outside view of that same window there is one totally different swat member who comes outside.
When El loco, and Payaso are running down the fire escape there is a swat member with a mustache running down after them but for some reason he disappears, and Gaines, and Michael jump down the fire escape into the dumpster after them instead. Also two other swat members who went outside the window disappeared too.