Southwest grapples with new labor and revenue problems

DALLAS (AP) — Southwest Airlines is lashing out at the union representing its mechanics, suggesting that they are purposely grounding planes in order to gain leverage in new contract negotiations.
Separately, Southwest said Wednesday that the partial shutdown of the federal government will cost it $60 million in lost revenue during the first quarter — far more than the airline's previous estimate of a $10 million to $15 million.
Southwest said it has continued to see softer bookings