 And it's the second time a United Boeing jet has lost a tire in the past few months. In March, a United Boeing B777-200 jet lost a tire mid-air after takeoff from San Francisco. I'm Lisa Dwyer. A lot of Americans flew to their holiday destinations last week. Record 3 million people passing through airport screening checkpoints on Sunday. That beat the previous record of 2.99 million travelers. More on these stories at townhall.com.