Miami-Dade officials hold a news conference on the partial collapse of a condo building and ongoing rescue mission in Surfside, Fla. Read more: https://wapo.st/2UKadGO. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/