The flight attendant allegedly told passengers "if your seat belt isn't tight, you f***ed up."
The administration's spokesman slammed the party for failing to knock down Trump.
Six world powers and Iran struggled to conclude an outline accord on Tehran's nuclear program in the face of a U.S. threat to abandon the talks.
The White House does not see the rebel takeover of that government as a sign that either Iran or al-Qaeda are exerting control there.
"The president has not laid out a specific end date," White House spokesman Josh Earnest told reporters.