San Bernardino, California (CNN) It started at a holiday party -- perhaps with a slight or a testy exchange, something that prompted Syed Rizwan Farook to storm off angrily.
It ended in a bloodbath with 14 people dead and 17 more wounded -- the deadliest mass shooting in the United States since Sandy Hook. At its center, a couple, Farook and Tashfeen Malik. Dressed in black, carrying semi-automatic rifles, police say they unleashed a massacre Wednesday at the Inland Regional Center, a facility for the developmentally disabled in San Bernardino, California.
That was their first brazen act. Then they led police on a chase. Farook fired while Malik drove. They died in a hail of bullets when confronted by 21 officers.