Here’s how the 2015 San Bernardino terror attack unfolded

It’s been 10 years since a county employee and his wife opened fire during a holiday-themed training in San Bernardino.

Fourteen people — all but one San Bernardino County workers — died in that conference room, while 22 were wounded. The Dec. 2, 2015, shooting shook the city, region and nation, setting off memories and trauma that last until today.

Here’s a look at key events that occurred before the first bullets were fired, on that tragic day and in the years that have since passed.