Exhibit 10.12(a) AMENDED AND RESTATED SEVERANCE AGREEMENT THIS AMENDED AND RESTATED SEVERANCE AGREEMENT (the "Agreement") is made and entered into as of this 28th day of December, 1999 (the "Effective Date"), by and between ATLANTIC COAST AIRLINES...Severance Agreement • March 30th, 2000 • Atlantic Coast Airlines Holdings Inc • Air transportation, scheduled • Virginia
