Morgan Norwood reports on Spirit Airlines - known for its bright-yellow planes and rock-bottom prices – is shutting down after it was unable to secure a bailout from the federal government; Alex Presha reports on the growing concerns about the state of the economy with gas prices surging to as high as eight dollars a gallon in parts of California; Selina Wang reports on President Trump issuing a new warning to Iran as officials with that country say the war is likely to resume and more on tonight’s broadcast of World News Tonight with David Muir. 00:00 Intro 02:24 Spirit airlines - shutting down after 30 years - leaving flyers scrambling for options. 06:09 Growing concerns about the state of the economy - gas prices surging - as high as eight dollars a gallon – in parts of California. 08:30 President Trump issuing a new warning as Iranian officials say the war is likely to resume. 11:27 A pharmaceutical company filed an emergency appeal earlier today after a lower court on Friday b...