Question: Which regional airline, which is headquartered in Delta Air Lines Building C at Minneapolis-Saint Paul International Airport, is one of three holdings for a privately owned holding company, headquartered in Bridgetown, Missouri?
Sentence (from "Compass Airlines (North America)"): On August 21, 2007, it began flying two Embraer 175 76-passenger aircraft, and expanded to 36 aircraft by December 2008.
Relevant evidence: No