ANCHORAGE, Alaska (AP) — The commuter flight that crashed on Alaska sea ice last week, killing all 10 aboard, was part of the workhorse network of short-hop flights that people in the immense and rugged state rely on to get to medical appointments, attend work meetings, buy essential supplies or even travel to away sports games.

Two men were on a work trip to service a heat recovery system vital to a community’s water treatment plant. A retired teacher was on a trip mentoring other teachers. Another person was flying for a doctor’s appointment.

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