"No indication"
They destroyed their cell phones and their hard drives.
It really can’t mean anything else other than they were having conversations and sharing information with people they didn’t want identified. Doing so right before the attack narrows any other explanation for these actions to zero
Pakistani authorities probe shooter Tashfeen Malik's possible ties to militants
Punjab Pakistan 2013
Kathy Gannon of The Associated Press reported in September that militants from Punjab, Pakistan’s most populous province, were massing in the tribal areas to join the Taliban and train for an anticipated offensive into Afghanistan this year. In Punjab, mainstream religious parties and banned militant groups were openly recruiting hundreds of students for jihad, and groups of young men were being dispatched to Syria to wage jihad there. “They are the same jihadi groups; they are not 100 percent under control,” a former Pakistani legislator told me. “But still the military protects them.”
If all you want to do is poke the bear, find another zoo.