President Donald Trump ordered US flags on federal buildings lowered to half-staff after the deadliest shooting in modern American history.
At least 58 people were killed and more than 500 were injured after 64-year-old Stephen Paddock opened fire on a music festival in Las Vegas Sunday night.
Trump will travel to Las Vegas on Wednesday to meet victims' families, first responders, and local officials.
Here's what Washington, DC looked like on Monday:
Las Vegas City Hall lowered its flags as well:
Flags are flying at half-staff at City Hall 🇺🇸 #lasvegasshootingpic.twitter.com/gIVQVxV9T0
— City of Las Vegas (@CityOfLasVegas) October 2, 2017