If Northwest Airlines is grounded by a strike on Saturday, two small airlines that feed it passengers as Airlink partners have said they will also halt flights. Here are some facts about the regional carriers:

NAME: Mesaba Airlines

FLIGHT ROUTES: Serves 91 cities in 18 states and three Canadian provinces.

Colorado; Illinois; Indiana; Iowa; Kentucky; Michigan; Minnesota; Montana; Nebraska; New York; North Dakota; Ohio; Pennsylvania; South Dakota; Tennessee; Virginia; Wisconsin; West Virginia. Also Quebec, Ontario and Saskatchewan in Canada.

PASSENGERS: Carries 15,000 passengers on 800 flights daily.

BACKGROUND: The Minneapolis-based airline started in 1944 as a charter service. Has been doing commercial flights since 1973. The airline signed a code-sharing agreement with Northwest in 1994, and in 1995, Northwest bought a third of Mesaba's publicly-traded stock. Northwest contracts for all of Mesaba's capacity.

EMPLOYEES: Nearly 3,000 employees.

STRIKE PLAN: No plans to cancel any flights unless a strike is called.

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NAME: Express Airlines I

FLIGHT ROUTES: Serves 29 cities in 11 states.

Alabama; Arkansas; Florida; Georgia; Indiana; Kentucky; Louisiana; Mississippi; Missouri; Oklahoma; Tennessee

PASSENGERS: Carries an average of 4,000 passengers a day on 238 flights.

BACKGROUND: Founded in 1985, the company was bought by Northwest Airlines a year ago, and is a privately-held subsidiary of Northwest. Operates out of Northwest's hub in Memphis, Tenn.

EMPLOYEES: About 1,400.

STRIKE PLAN: No plans as to cancel any flights prior to a strike.