It's been a rough stretch (no pun intended) for Dallas-based Southwest Airlines as another jet was forced to make an emergency landing after it was hit with a "pressurization issue in flight," resulting in oxygen masks dropping. Flight 861 was on its way from Denver to Dallas when the crew radioed ahead to warn ground personnel to have paramedics ready when the plane landed at Dallas Love Field on Saturday night. Four of the 120 passengers said they had ear pain as a result.