1) This episode begins with a shot of a flock of crows flying over the Atlanta skyline from the view of Rick’s hospital room from the pilot episode, “Days Gone Bye”. The crows are likely a memory of a similar flock of crows Rick and Michonne spotted and pointed out to Judith back in the beginning of this season’s premiere episode, “A New Beginning”.
2) As Rick attempts to wake up his past self, the flock of crows turns into a swarm of helicopters, which is both a callback to the helicopter Rick chased through Atlanta in the aforementioned “Days Gone Bye” and a nice little bit of foreshadowing.
3) While looking at the swarm of helicopters, Rick hears Morgan ask him “What’s your wound?” This is the first (And, as it would turn out, only ) actual memory in any of these dream sequences, specifically, Rick’s first meeting with Morgan.
4) After watching Maggie and Dianne kill a walker, we cut back to Rick as he detours into the woods and stumbles upon an abandoned cabin with “Come face me, assholes”, spray-painted on the boards across the door. Did the owner just think the walkers were crazy (Implying it was from the beginning of the outbreak)? I’m thinking so, otherwise, why write a message to them, seeing as how they couldn’t read it?
5) Inside the cabin, Rick bandages his wound. After doing so, he spots two dusty skeletons on the floor with, apparently, self-inflicted gunshot wounds. If you look carefully, the second skeleton doesn’t seem to have any pants.