By tonight, President #Trump will have chosen a designated survivor to sit out of his joint address to #Congress. This person won’t attend the address at the #Capitol in person — just in case there is a catastrophic event and they need to step up as a leader. Here's what to know about the #designatedsurvivor, what they do during presidential speeches to Congress and cabinet members – and what past designated survivors have said about the role. You can read more about this and President Trump's address at the linked article. politics #news #government #washingtondc