Snap a picture of the sky on 9-11 and post it on Instagram with the tag @911memorial. It recalls the bright blue sky of that morning and how we are all connected underneath the same big sky.
If you witness a firefighter on a stair climber this Saturday, they're paying tribute to their fallen brothers & sisters who didn't make it out on 9/11.
A moment of silence was had in remembrance of 9/11 followed by the playing of "Amazing Grace" at the Denver International Airport. Watch the moment here.
Disturbing, though true, these facts are hard to accept even 17 years later. Rest in peace to all those who lost their lives during this national tragedy.