[s2e7]: Lockdown

: The HAZMAT team eventually confirms the powder is harmless baking powder (or otherwise non-toxic), and the lockdown is lifted. Brooklyn Nine-Nine recap: 'Lockdown' - Entertainment Weekly

While the precinct is in chaos, Terry and Holt monitor the situation from Terry's home. [S2E7] Lockdown

: Following Amy’s advice, Jake eventually regains control by dropping the "fun boss" persona and threatening to arrest anyone who challenges his police authority. : The HAZMAT team eventually confirms the powder

: A less aggressive, more passive group. [S2E7] Lockdown

: Jake initially tries to keep spirits high by granting everyone's demands—such as excessive food and entertainment—which leads to a loss of authority.