Technicians at the Oklahoma Army National Guard base in Tulsa accidentally triggered the fire suppression system in a hangar on Tuesday morning, causing foam to comically flood out of the hangar onto the tarmac. In a freak coincidence, a dust devil formed on the base and kicked up a foamnado.

The best way to mark today's one-year anniversary of the Moore, Oklahoma tornado is to show how much the city has recovered since that awful afternoon.

Today is the 15th anniversary of the devastating F5 tornado that tore through Moore, Bridge Creek, and Newcastle in Oklahoma on May 3, 1999. The tornado remains the strongest ever observed (a Doppler-on-Wheels measured winds of 301 MPH) and the analog to which all major tornadoes were compared up until Joplin in 2011. Over ten thousand structures were damaged or destroyed in the storm, and three dozen people lost their lives.