 The school says the messages referencing tropes about Jewish wealth and privilege were sent in May during a panel about Jewish life on campus. Columbia is launching an anti-Semitism training program in the fall amid pressure over its response to on-campus protests. A United Airlines plane landed safely in Denver Monday after a wheel fell off the jet during takeoff from Los Angeles. No injuries were reported among those on board the Boeing 757. United says the wheel was recovered at LAX and an investigation is underway.