A man carries an injured child following a military airstrike at a camp for displaced people in Rann, Nigeria, Tuesday, Jan.... Boko Haram militants have kidnapped more than 400 women and children from the northern Nigerian town of Damasak that was freed this month by troops from Niger and Chad, residents said Tuesday.... Nigerian, Chadian and Niger forces have driven militants out of a string of towns in simultaneous offensives over the past month....