HOUSTON - Atlantis astronauts may use a sewing kit normally reserved for spacesuits to repair a peeled-back thermal blanket near the spacecraft's tail, NASA managers said Tuesday. The shuttle astronauts' 11-day mission was extended Monday by two days to allow time to fix the thermal blanket, which peeled during launch last week. No final decision has been made on when the repair, which covers a 4-by-6-inch area over an engine pod, will be made, or what repair technique will be used. Engineers have looked at using duct tape or other adhesives to secure the blanket, but are leaning toward a...