Hundreds of employee emails and texts released by Boeing to Congress paint a deeply disturbing picture of how the company apparently sought to mislead federal regulators about simulators used to train pilots for its embattled 737 Max jetliner. The Max has been grounded for nearly 10 months. A flaw in the plane's software was a key factor in two crashes that killed 346 people. Kris Van Cleave reports on what's in the documents.
