Two events in chapter 4

Johnny and Ponyboy are in a vacant lot one night. Five Socs, including Bob and Randy, start approaching the two boys, and Ponyboy can tell they are drunk. Johnny pulls out his switchblade as they are backed against the fountain. Ponyboy and Johnny are both terrified, but they try to look tough. A fight ensues and Johnny ends up killing Bob to protect Pony from being drowned.

With Dally's assistance, Johnny and Pony hop a train to Windrixville and hide out in an abandoned church.