I'm pretty sure the #2 photo shows the USS Arizona getting hit by a torpedo from a mini submarine. You can see the concussion waves in the water radiating from the ship. You can also see the torpedo track. Follow the concussion waves out and you can see three little splashes, that's allegedly the tail of the mini sub coming out of the water as it rocked under the water. (I watched a TV show about the mini subs.)
This was posted before and I noticed a couple of things on picture 15. I didn't know they used the round drums on the Thompson, I thought they pretty much only used the stick/straight ones. What is the pistol grip shotgun looking thing the other guy is carrying in that same pic?