Kathryn Rooney Vera, Bulltick Head of Research & Strategy, says she is still remaining defensive. Claudia Sahm, Sahm Consulting Founder & Former Federal Reserve Economist, explains why she thinks the Fed should ban the Phillips curve. Kristina Hooper, Invesco Chief Global Market Strategist, says we're getting back to a more normal environment. Helane Becker, Cowen Senior Research Analyst, says Southwest needs to cut back its ambitions.