French soldiers prepare to leave their garrison to patrol in Paris, Wednesday, Jan. 14, 2015. France ordered 10,000 troops into the streets Monday to protect sensitive sites — nearly half of them to guard Jewish schools — as it hunted for accomplices to the Islamic militants who left 17 people dead as they terrorized the nation.

Homegrown attacks like those in Paris worry analysts

Home-grown, less well-coordinated and more self-contained than a complex attack like those of Sept. 11, these plots involve fewer communicat…