These are the various airline sub-trees that make up ExpressJet
► Vercoa Air Service >Britt Airlines >Britt Airways (ii) + Bar Harbor Airlines + Rocky Mountain Airways + PBA (Provincetown-Boston Airlines) =>ExpressJet Airlines
ASA (Atlantic Southeast Airlines) ^ExpressJet Airlines
► Coastal Air >Southeastern Commuter Airlines >Southeastern Airlines (ii) ⇑
► Cape Cod Flying Services >PBA (Provincetown-Boston Airlines) + Bar Harbor Airlines + Rocky Mountain Airways + Britt Airways (ii) =>ExpressJet Airlines
►PBA (Provincetown-Boston Airlines) + Bar Harbor Airlines + Rocky Mountain Airways + Britt Airways (ii) =>ExpressJet Airlines
►PBA (Provincetown-Boston Airlines) + Bar Harbor Airlines + Rocky Mountain Airways + Britt Airways (ii) =>ExpressJet Airlines
Marco Island Airways ⇑
PBA (Provincetown-Boston Airlines) + Bar Harbor Airlines + Rocky Mountain Airways + Britt Airways (ii) =>ExpressJet Airlines
Naples Airlines (ii) ⇑
PBA (Provincetown-Boston Airlines) + Bar Harbor Airlines + Rocky Mountain Airways + Britt Airways (ii) =>ExpressJet Airlines
Ocean Reef Airways ⇑
Rocky Mountain Airways + Britt Airways (ii) + Bar Harbor Airlines + PBA (Provincetown-Boston Airlines) =>ExpressJet Airlines
Trans-Colorado Airways ⇑
Rocky Mountain Airways + Britt Airways (ii) + Bar Harbor Airlines + PBA (Provincetown-Boston Airlines) =>ExpressJet Airlines
Intermountain Airways ⇑
Rocky Mountain Airways + Britt Airways (ii) + Bar Harbor Airlines + PBA (Provincetown-Boston Airlines) =>ExpressJet Airlines
Trans-Colorado Airways ⇑
Vail Airways >Rocky Mountain Airways + Britt Airways (ii) + Bar Harbor Airlines + PBA (Provincetown-Boston Airlines) =>ExpressJet Airlines