Hello everyone. Here are pictures of individuals that I couldn't help my students in identifying. Any help would be appreciated. All of these were taken in central PA this summer/fall. I know the pictures aren't the best. Thanks in advance

The first one looks to be an Army Worm:


The second photo is too blurry to really see.

Third insect is probably a beetle, but that doesn't help considering 25% of all animals on Earth are beetles.

The fourth one is a type of crab spider, I think (note the position of the legs, which is very similar to the spider in your photo)