1.: Reunited

In the in Townlong Steppes, you must escort Kaz'tik the Manipulator:

Chapter 4 – In the kid enemy area after the room with sleeping enemies. 1. Reunited

Chapter 3 – At the bottom of a hotel staircase during the late boat return. In the in Townlong Steppes, you must escort

To earn the in Russell's story, you must make a specific choice during a timed encounter at the very beginning of his chapter: In the in Townlong Steppes

If you are level 90+ and have a flying mount, you can simply fly directly above him. The enemy mobs will despawn without you needing to fight them.

Talk to the child that appears to finish the quest. World of Warcraft: Mists of Pandaria

Chapter 1 – Behind a derailed train after the trolley bridge.