A police cruiser drives by as Redlands neighbors stand by across the street from the residence belonging to the shooters in connection to the Wednesday massacre in San Bernardino, California December 3, 2015. Authorities on Thursday were working to determine why a man and a woman opened fire at a holiday party of his co-workers in Southern California, killing 14 people and wounding 17 in an attack that appeared to have been planned. REUTERS/Alex Gallardo