Defense Secretary Donald Rumsfeld has won assurances from top government officials in Kyrgyzstan (KEER\'-gih-stan) that the U-S can keep using an airport there to support operations in Afghanistan. But officials also note that\'s not a permanent welcome. The country\'s defense minister provided the reassurance during a news conference today with the visiting U-S official. After his election this month, Kyrgyzstan\'s president said it was time to consider a U-S exit in light of progress in stabilizing Afghanistan. Officials say the U-S use of the airport contributes about 50 (m) million dollars a year to the Kyrgyz economy. (AP)