 At 854, Brian Bannmiller on WDEL. Southwest is flying into some financial turbulence. I'm Brian Bannmiller on business. The airline is reporting that it expects its second quarter revenue to hit records. However, it says revenue is still down. Southwest says its revenue per mile outlook is getting worse because it's difficult to adapt its pricing to the current booking patterns of travelers. All of this comes after a disappointing first quarter, which saw Southwest end service at four airports and