DUBAI, United Arab Emirates (AP) — A new American airstrike campaign against Yemen’s Houthi rebels appears more intense and more extensive, as the U.S. moves from solely targeting launch sites to firing at ranking personnel as well as dropping bombs in city neighborhoods, an Associated Press review of the operation shows.

Suspected U.S. airstrikes battered rebel-controlled areas of Yemen into Wednesday, with the Houthis saying the attacks killed at least six people across the country.