This week: Moretti's leadership is put to the test on his first day as the peace rally stampede patients flood the ER, Morris and Pratt have to be sneaky while trying to treat patients, a grandfather makes a rash decision after he finds out who started the stampede, a new intern has a wild first day, Gates loses his temper in a big way, and the whole staff (but especially Dubenko) is on edge as Neela is brought in in critical condition.