DESIGNATED SURVIVOR - "Backfire"- An investigative journalist shocks the White House when he reveals classified information during a press briefing and leaves Seth struggling to contain the damage from the leaked story. Meanwhile, Hannah unearths a key connection between MacLeish and the conspiracy, on Walt Disney Television via Getty Images's "Designated Survivor," WEDNESDAY, MARCH 22 (10:00-11:00 p.m.  EDT). (Ben Mark Holzberg/Walt Disney Television via Getty Images)