WE MAY NEVER KNOW THEIR MOTIVATION: One year after the San Bernardino attack, police offer a possible motive as questions still linger. “Before the couple got married and Malik came to the United States, the two exchanged messages online ‘showing signs in their communication of their joint commitment to jihad and to martyrdom,’ FBI Director James B. Comey said last year.”

It’s an enigma.

Plus: “One person working in the neighborhood told a local outlet he had seen numerous Middle Eastern men in the area but did not report anything to avoid racial profiling. Another man told a local broadcast station that an unspecified person saw purported suspicious activity — including the couple getting numerous deliveries and working in the garage at odd times — but, again, did not want to be seen as involved in racial profiling.”