That’s a wrap. Sunday the U.S. left the Shamsi airbase following a 15-day ultimatum from the Pakistani government. The U.S. was told to leave the base—believed to be a major post for drone operations in Afghanistan and Northern Pakistan—after a NATO raid left 24 Pakistani soldiers dead last month. Pakistan has said that it will shoot down any drone that enters its airspace. Border posts have reportedly been stocked with air defense systems in the event of an intrusion. Pakistan also closed an important supply route into Afghanistan.