Jimmy Fallon July 30, 2019 2:57 am ‘Tonight': 7 Seconds With Rachel Brosnahan Jimmy Fallon challenges Rachel Brosnahan to take turns trying to stop a timer as close to exactly seven seconds as they can, with the winner receiving an elaborate, seven-second celebration. US & World Videos 1:29 US gymnast Jordan Chiles talks family, wedding planning and her surprising love for jazz 1:40 Track and field star Laulauga Tausaga has already made history. Can she do it again at the Paris Olympics? 2:14 Swimmers Gretchen and Alex Walsh aren't just sisters – they're also Olympic hopefuls 2:39 Man dead after gunshots during party at event hall in Waterbury 1:46 Dogs, cats, turtles, tarantulas: US Olympians love their pets