Lisa Hallett before run
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To Remember: Coping with war deaths through running

25 April 2014 Last updated at 00:35 BST

When Lisa Hallett's husband was killed fighting for the US Army in Afghanistan, she turned to the one thing that would help her cope - running.

Captain John Hallett was one of more than 2,000 American military personnel killed in Afghanistan since 2001 - including 41 from his unit alone.

Mrs Hallett and other military wives affected by the deaths in the unit started a running club near Joint Base Lewis-McChord in Washington state.

She and her teammates from wear blue: run to remember run to honour those who have died and to help create a system of support and encouragement.

Produced by Glenn Osten Anderson and Ian Connors

Watch their full documentary To Remember this weekend on BBC World News.