Friends of mine were supposed to fly BOS-DFW-LAX on Dec 17, but the BOS-DFW leg was delayed so they would miss their connection.
They were rebooked onto a BOS-LAX flight several hours later, but after they had boarded it was announced that the plane would be making a refueling stop due to strong headwinds. Turned out it was at DFW.
They did not arrive into LAX until 2AM PST.