I thought the premiere was great. I don't get the point of the black and white flashbacks though. Just make the aftermath of the finale the first part of the episode, then have the rest of the episode dedicated to herding the walkers. The flashbacks kept slowing down the pace of the episode and got pretty annoying after the first few times.
Speaking of zombie hordes, that horde at the quarry
I definitely feel some tension rising between Rick and Morgan. I can understand Rick's stance of "I don't take chances" but he is getting a bit too trigger happy. We don't know what Morgan's been through but I doubt it's anywhere near as bad as the world of shit Rick's been through since they last spoke.
Maybe they'll do a Morgan centric episode showing what he's been up to since S3 and his journey last season. I'm kinda tired of them doing bottle episodes(Which have been done to death in the last 2 seasons), but this is one I would like to see. Who taught him how to use that staff? Why did he decide to venture off to Terminus?
Where was Carl? He had one scene in the whole episode.
I'm glad to see Heath join the group. One of my favorites from the comics.
I'd say the Wolves were the ones blaring the horn at the very end of the episode.