The CEO of Allegiant Air's parent company is out after barely a year, replaced by the former boss

There's a shakeup at the top of Allegiant Travel, the parent company of the Allegiant budget airline. The company said Thursday that CEO and director John Redmond resigned, effective immediately. The company isn't saying why he left. He's being replaced by the former CEO, Maury Gallagher, who held the job from 2003 until last year. Gallagher has been with Allegiant as majority owner since 2001, and was the CEO from 2003 until last year. The airline mostly serves leisure travelers heading to places like Las Vegas.