With Wednesday's mass shooting in San Bernardino, Calif., ABC15 took a look at mass shooting data in the state and nation.
Detailed data compiled by Mass Shooting Tracker shows that Arizona has experienced 16 injuries and 17 deaths from mass shootings so far this year.
Toggle the charts below to compare deaths and injuries in recent years from mass shootings in the U.S. and Arizona.
According to their website, Mass Shooting Tracker defines a mass shooting as, "four or more people shot in a spree or setting."
ABC15 also mapped 2015's U.S. mass shootings between January 1 and November 27.
Click on each point on the map below to see details on the mass shootings that occurred in each location.