Be glanced at her as he waited for the credit card machine to accept his code.

"Drunk man with a big knife and a lousy aim."

Her eyes got wider. The machine beeped and she took it back. She handed him the receipt as raised voices sounded off in the back section. Ben spun and tore open the curtain to glare back.

The seated man was tugging on the handle of the bag the doctor had lifted down from the overhead bin and was yelling something at her. Ben stalked down the aisle and the man let go of the bag and shrank back into his seat.

The co-pilot lifted...