CHIN's

Maddie goes for a ride-along with Athena in the hopes of being on the other end of a 9-1-1 call; Hen attempts to learn how to prevent her family from falling apart at the seams; disaster strikes at a military funeral and movie theater.

Athena contemplates accepting a promotion that will take her out of the field.

The first responders continue to deal with the fallout of a massive earthquake and its deadly aftershocks. Athena tries to keep the peace as Bobby and team continue to rescue victims from a collapsing high-rise hotel, both under the rubble and high above the ground. Maddie 's first day on the job involves helping a pregnant couple deliver their baby safely.

When a massive earthquake rocks Los Angeles, the first responders rush to rescue victims from a crumbling high-rise hotel both under the rubble and high above the ground. Athena must deal with wreckage from a collapsed freeway overpass and Maddie is thrown into the fire as she faces her first crisis as a 911 dispatcher.

On one of the hottest days of the year, the first responders feel the pressure as harrowing incidents keep happening around the city, including a road rage accident involving a van full of tourists, an emergency at an auto-repair shop and a grenade. Meanwhile, Buck gets a surprise visit from his sister, and a handsome new hire Eddie jeopardizes Buck's chances of being chosen for a fireman calendar.

The guys are uncomfortable with the thought of Carol's breast milk while Rachel is upset by Monica's growing friendship with Julie. Meanwhile, Joey competes with a fellow cologne spritzer for the affections of a beautiful colleague.

When Grayson doesn't share Jules' sadness on a series of unfortunate but accidental events, she questions whether they're meant to be together.

Meanwhile, Travis' new girlfriend throws Bobby off his golf game, and Ellie gets upset with Andy when he uses their joke on Laurie.

Jules wants to help Bobby gain his confidence back and thinks fixing up his boat and getting it back in the water will do the trick.