Pakistan called for the U.S. vacate its air base in the southwestern part of the country in response to a deadly NATO attack over the weekend. Deborah Gembara reports. The fallout from the weekend's deadly NATO airstrike in Pakistan continued on Wednesday. Islamabad gave the U.S. notice to vacate Shamsi air base in the southwestern part of Pakistan. Prime Minister Yusaf Raza Gilani made the announcement in Karachi.