: Mike uses helium-filled balloons to short-circuit power lines and infiltrate a warehouse, a clever practical tactic.
: Walt realizes that as long as Gale is alive and trained, he is "expendable" to Gus Fring. To save his life, he takes the "full measure" Mike previously spoke of by ordering a hit on Gale. [S3E13] Full Measure
: A flashback shows a younger, hopeful Walt and Skyler buying their house. It highlights Walt's failed dreams and original ambition, contrasting with the desperate man he has become. Technical & Symbolic Highlights : Mike uses helium-filled balloons to short-circuit power
: This episode marks the first time Mike Ehrmantraut's first name is spoken (by Saul) and the first time Victor's name is mentioned. [S3E13] Full Measure